I have a shitty PC, so all the engines I want don't really work. Though, I have done some clearing space but the specs are pretty bad and it is a hand-me-down.
Having a slow computer makes things tougher but where there's a will, there's a way. For example, last year I had to leave home for a few months and only had my phone with me. But, I was still able to code and publish console games from my phone during that time. When I returned home, I took the code that I typed up on my phone and I went into Unity and published my Sudoku android game with it. I am unfortunately all to familiar with the struggle of trying to become a programmer with no money to do so.
With a slow computer, big engines such as Unity or Unreal Engine may be too much although you might get away with Unity 2D. A safer bet might be creating MERN or FERN websites since those are pretty low impact. You could try RPG Maker but that's very restricting and not really programming. On that note, you could experiment with Python.
I disagree. Game development is not just programming, it includes 2D/3D/Audio asset creation, UI design, and programming. Depending on the game you want to develop, it can include a lot of programming or next to no programming. The engine chosen to develop also affects the amount and type of programming needed.
Picking an engine is very important as it will dictate what kind of developments you can make and where you can publish your builds.
For example, Unity can build for Windows, Mac, Linux, Servers, Android, IOS, Websites, PS4, PS5 and more. However, if you want to truly build for IOS then you need a device with a Macintosh operating system and another device with an IOS operating system. Furthermore, while Unity extends from C# without an intimate understanding of the Unity libraries then C# knowledge means nothing. Also Unity extends from C# 9 and less so mastering C# 12 isn't very helpful. There are also many C# functions and libraries that aren't usable in Unity.
In the Android application "C# shell" you can build Android applications but you cannot publish them to the Google Play store since that engine only builds APK's and not AAB's.
The engine or lack thereof that you choose to learn is very important.