I have prepared a script to automatically install moodle with nginx, and mysql. I have tested only on ubuntu 24.04, it might work on similar distros if php8.3 is added to apt repo. but anyway, if someone wants to save time, here it is: https://drive.google.com/file/d/106IRn29UmzCoh2ia4qhQHvKsjm6wBYOC/view?usp=drive_link

Btw it installs moodle 4.5.5+, you can change the checkout commit hash in the file to install different versions (aware of php compatibility)