Utterly Mad

It's a difficult thing with game development, yes you should aim high so that what you produce doesn't suck, but at the same time you have to work within your current capabilities in order to expand those capabilities, because anyone, absolutely anyone, is capable of producing AAA quality games given enough experience with game development.

I'm just suggesting to start small because it makes the entire process a lot less frustrating and complicated further down the line.

A lot of the stuff I say has been covered by other people who teach this stuff, way better than I do, for free. Checking out their resources is always a good idea, I'd point you over to the Extra Credits YouTube channel for a lot of it, I certainly learnt a few things from them fairly recently that I wish I'd thought about a long time ago when I was active in Game Development.

Platformers are a brilliant place to start, you gain quite a bit of valuable experience you don't really think about from making a decent platformer, and once you know what you're doing it's real easy, with the right creativity that I'm sure you have, to make something excellent.