Hey there Thor! for a start.

I think that because you have been trying to lucid dream for so long that when you experience a lucid dream you become excited and the dream fades because of this quick jolt in awareness and thus you awaken, you just need to get rid of this excitedness, i know its hard but believe me it is achievable.

Okay, its good that you have found something that works for you, i think to start bettering your control you could try simple things, maybe wish a basic object into existence, then build it from there, start from basics and build your way up. The truth is that you can control anything in your dream, you just have to believe you can and push yourself, if you truly believe something will work in a lucid dream it usually does. Maybee start by wishing some basic objects into existence like a mug or a chair, very basic, then try something bigger and if it doesn't work you can identify what your not strong on and improve it! Best of luck Thor, cool name btw