Yes, but I didn't understand that much
can you teach me please
Well done for at least looking at them!
Coding and game making is no small task and most developers of code have enough interest in it which then gives them the motivation to overcome the struggles of learning how to do it!
Like with anything really, eg if you really like cooking, then you will become a good cook eventually!
I’m not doubting your motivation and interest, but you mention that you already have a game design, - maybe you are actually a game designer and have enjoyed that part of the process more than you would enjoy the actual coding development of it?
It sounds a little bit like you have an idea for a game which you have enjoyed putting together and would now like someone else to make it for you really?
If you truly want to make this game yourself and have the motivation to do so, then I would recommend starting small and probably not jumping straight into unreal engine if you found the online tutorials tricky.
Try downloading unity which is free, or try looking at processing.org which is also free.
Both of these environments are designed to be easily picked up and have absolutely masses of online tutorials and demos for a wide variety of abilities. There’s also
https://scratch.mit.edu/ which is really basic but a good introduction to the concepts.
Unless there’s someone on this forum reading this that really really enjoys teaching in their own free time (or as PiLhEaD suggests, on specific forums)
Then maybe have a look at unity or processing so that you start to build a grasp of the fundamentals.
Good luck!