Learn How the web server works, Here's the youtube video by LiveOverflow explaining web server
What is a Server? Deepdive

Learn How php works
How PHP works

• Learn PHP Basics and OOP features
• Learn PHP in Interactive Environment

If you are familiar with other programming languages, Here's the crash course to get you started in just one hour :
PHP 8 Crash Course for Beginners

If you have good experience as a programmer and want to get started with PHP and LARAVEL as soon as possisble, Here's PHP in 100 Seconds by Fireship 😉 PHP in 100 Seconds

Now that you have learned PHP, we can dive into LARAVEL.

you don't need to be fluent/pro in PHP, with just basics and OOP concepts you can get started with LARAVEL

• Laravel Documentation
• Laravel Developer Roadmap

Don't be harsh on yourself if you can't understand something or got stuck. This may be overwhelming, just keep learning and researching continuously, It will take time.