I tried WordPress Bitnami on AWS Marketplace, but encountered some issues that were difficult to fix.
This article will guide you through deploying WordPress on AWS EC2 Linux 2 using two methods: LAMP and Docker Compose.

I. Create a New Instance

Access https://console.aws.amazon.com/ec2/

From the EC2 Dashboard, select Launch Instance. Choose "Amazon Linux 2 AMI (HVM), SSD Volume Type"
Select t2.micro (Free tier eligible)
Select Review and Launch
...
Note: After launching, go to the Security tab, select Security groups, and Edit inbound rules to add type HTTP with source Custom set to 0.0.0.0/0.

Ref: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EC2_GetStarted.html#ec2-launch-instance

II. Connect to the Instance

There are multiple ways to connect to an EC2 instance. Here are two popular methods:

1. Connecting via SSH:
   Go to EC2 > Instances Click the Connect button. Switch to the SSH client tab. There you will find complete instructions to connect via SSH. Open your terminal and enter a command similar to the one below:

ssh -i "path/xxx.pem" ec2-user@ec2-xxxx.us-east-2.compute.amazonaws.com

2. Connecting via Cyberduck:
   Select SFTP (SSH File Transfer Protocol) Enter server details as Public IPv4 DNS and SSH Private Key as your xxx.pem file. Username is ec2-user

Ref: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AccessingInstances.html

Method 1: Deploy WordPress to AWS EC2 Linux 2 using LAMP

Installing Apache, MySQL, and PHP on Linux is briefly called LAMP.

Connect via SSH and run the following commands:

Install Apache, PHP, and MariaDB

sudo yum update -y
sudo amazon-linux-extras install -y lamp-mariadb10.2-php7.2 php7.2
sudo yum install -y httpd mariadb-server
sudo systemctl start httpd
sudo systemctl enable httpd

Configure File Permissions

sudo usermod -a -G apache ec2-user

Logout and log back into SSH, then run:

groups

If it displays ec2-user adm wheel apache systemd-journal, it's good to go.

sudo chown -R ec2-user:apache /var/www
sudo chmod 2775 /var/www && find /var/www -type d -exec sudo chmod 2775 {} \;
find /var/www -type f -exec sudo chmod 0664 {} \;

Secure the Database

sudo systemctl start mariadb
sudo mysql_secure_installation

When running the command above, it will ask for password confirmation. Leave it blank and press Enter.
Enter Y for all questions. Make sure to save the new password when setting it, as you will need it later to connect to the database with the root user.

Install phpMyAdmin

sudo yum install php-mbstring php-xml -y
sudo systemctl restart httpd
sudo systemctl restart php-fpm
cd /var/www/html
wget https://www.phpmyadmin.net/downloads/phpMyAdmin-latest-all-languages.tar.gz
mkdir phpMyAdmin && tar -xvzf phpMyAdmin-latest-all-languages.tar.gz -C phpMyAdmin --strip-components 1
rm phpMyAdmin-latest-all-languages.tar.gz

In /var/www/html/phpMyAdmin, rename config.sample.inc.php to config.inc.php

Ref: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-lamp-amazon-linux-2.html

Install WordPress on AWS EC2

Go to Public IPv4 address/phpMyAdmin and log in with user root and the password created in step 3
Create a new database with any name you like

wget https://wordpress.org/latest.tar.gz
tar -xzf latest.tar.gz
cp -r wordpress/* /var/www/html/
sudo vim /etc/httpd/conf/httpd.conf

Find the line <Directory "/var/www/html">
Press i to enter insert mode and change AllowOverride None to AllowOverride All Then save by pressing ESC, typing :w and pressing Enter

sudo yum install php-gd
sudo chown -R apache /var/www
sudo chgrp -R apache /var/www
sudo chmod 2775 /var/www
find /var/www -type d -exec sudo chmod 2775 {} \;
find /var/www -type f -exec sudo chmod 0664 {} \;
sudo systemctl restart httpd
sudo service httpd restart

Finally, point your domain to the Public IPv4 address and when accessed, the database configuration screen will appear.
Enter the database name created earlier. Host defaults to localhost.
User is root and password is the one created in step 3.
Once done, click Install and you're good to go.

Ref: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/hosting-wordpress.html

How to Upgrade PHP 7.2 to PHP 7.4

sudo amazon-linux-extras disable php7.2
sudo amazon-linux-extras disable lamp-mariadb10.2-php7.2
sudo amazon-linux-extras enable php7.4
sudo yum clean metadata
sudo yum install php-cli php-pdo php-fpm php-json php-mysqlnd
sudo systemctl restart httpd
sudo systemctl restart php-fpm

Type php -v; if it displays as below, it's successful:

PHP 7.4.21 (cli) (built: Jul 7 2021 17:35:08) ( NTS )

Ref: https://greggborodaty.com/amazon-linux-2-upgrading-from-php-7-2-to-php-7-4/

Method 2: Deploy WordPress to AWS EC2 Linux 2 using Docker Compose

Open terminal and run the following commands:

sudo yum update
sudo amazon-linux-extras install docker
sudo systemctl start docker
sudo usermod -a -G docker ec2-user
exit

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose

The latest version at the time of writing is 1.29.2. Visit https://docs.docker.com/compose/install/#install-compose-on-linux-systems to get a newer version.

mkdir wordpress
vi ~/wordpress/docker-compose.yml

Press key i to switch to insert mode and paste the code snippet below:

version: "3.9"

services:
  db:
    image: mysql:5.7
    volumes:
      - db_data:/var/lib/mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: yourpassword
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD: wordpress

  wordpress:
    depends_on:
      - db
    image: wordpress:latest
    volumes:
      - wordpress_data:/var/www/html
    ports:
      - "80:80"
    restart: always
    environment:
      WORDPRESS_DB_HOST: db:3306
      WORDPRESS_DB_USER: wordpress
      WORDPRESS_DB_PASSWORD: wordpress
      WORDPRESS_DB_NAME: wordpress

  phpmyadmin:
    image: phpmyadmin/phpmyadmin
    restart: always
    ports:
      - 3333:80
    environment:
      PMA_HOST: db
      MYSQL_ROOT_PASSWORT: yourpassword
volumes:
  db_data: {}
  wordpress_data: {}

Replace yourpassword with your new password.

Press ESC and type :wq to save and exit.

cd ~/wordpress/
docker-compose up --build -d

Ref: https://qiita.com/HyunwookPark/items/92d10899cd19f2f06f91

After finishing, go to Security groups and open port 3333 to access phpMyAdmin.