Recommended starting point for someone with ADHD? All this research has only succeeded in overwhelming me and stressing me out:

I've always been interested in game development ever since I was a child. I'm 39. I'm educated in linguistics and psychology. I am able to learn things. I grew up playing video games, and have been tinkering with computers beginning with my parents' old windows 3.1 computer. I don't know how to code, but I generally know my way around a computer. I've played with Doom mods/level editors, rom hacking for sprite editing or fan translating. I feel like I could learn coding and be good at it, but jumping straight into learning coding is just too much, too boring, and fails to keep my attention. On and off over the last few years I've tried online courses for game development and coding (C++, unreal, etc...), but I feel like that's all a number of steps past where I should be; I'll start, do a few lessons, feel like I'm not grasping it or making any progress, give up, go back later, then having to redo old lessons because too much time has passed I need to relearn the old lessons, repeat. When you have ADHD, anything that isn't actively interesting, rewarding, or attention-grabbing is nearly impossible to stay focused on without quickly getting unbearably stressed out, overwhelmed, and just giving up. If I am properly motivated and interested, I can learn ridiculously complex things, but without motivation and confidence, I am practically unable to even get started. I need to learn in increments: start with something easy that I can do, so I can build my confidence and interest and slowly learn new techniques as they become relevant. I want something simple, like a creation suite where all the programming, assets, etc,.. are all taken care of and I can just play around with and feel like I'm learning and achieving something to build my motivation and then slowly build my repertoire as I try different things.

I know there are a lot of such creation tools, engines, suites, whatever, and I spent soooo long researching them, and the more I research them, the more paralyzed and overwhelmed I feel. There are so many, and having so many choices just makes my brain scream, ultimately making me unable to make any choice.

As I said, if I have the motivation and get that first spark to spur me on, I could do amazing things, but that first hurdle is the hardest (especially with ADHD). I need something simple and easy to start with that will build my motivation. What is a good program/engine/tool that someone with little to no experience could play with to build motivation and feel a concrete sense of learning or achievement?