Dropping hobbies and possibly learning game design?

Picking up hobbies has always been kinda difficult cuz at first I get crazy into it for a few days, buy the supplies, and I start imagining myself doing it everyday for like the next 20 years. Then after the first week of me doing the hobby, I get bored and never pick it up ever again. I did it with learning how to 3d model (watched the tutorials, got blender, and even got Nomad on my ipad), did it with shrink plastic earring making a few years back (havent touched any of that stuff since like 2021), and learning german and arabic. I think the only hobby that has remained constant in my life has been me playing roblox and art. Though even with art I havent been as active as I was in highschool. I rarely post any art anymore because of school (and also cuz I've been getting artblock often). 

This year, I'm going to try and gain a new constant hobby. One that I wont try to obsess over and make my whole personality. Preferably something thats free to do so that I wont feel pressured to do it bc I paid for it?

Maybe I can slowly learn game design? I tried learning a while back and it didnt go well because I'm not great with tech stuff like that. Maybe I could try and learn how to code and be a scripter on roblox? Or maybe just relearn 3d modeling or something. I think I would like to learn enough that I can help other people online with their games and maybe even get some cash out of it. Do you guys have any recommendations for free courses and videos to learn game design ?