Started working on a boss for the climax of the demo I'm working on. This big demon dude has a lot of attacks, both melee and spells and can move around the arena by walking, flying and dashing around. I'm currently polishing it and finishing up his behavior but I'm happy with how it's coming along.
If I'm honest I never though I'd be able to pull this off lol.
I'd download an engine (either Godot or Unity, UE5 is probably way too bloated for a beginner) and start from there. Forget about making assets or music or whatever, just follow some tutorial to get started with the engine.
But here comes the thing: even for that you'll need to know how to code. It's either coding, or messing around with blueprints and "visual languages" and the like which might be fine for a small project but for something cooler and/or bigger you probably want to do it by coding. Plus those "visual languages" always end up being a total spaghetti.
So I'd advise to start learning to code. You don't need to be an expert to make something small, but you need to know the basics.
edit: now that I think about it, for something small you might be fine with using something like ChatGPT. Just make sure to try and understand what you are doing instead of just copy&pasting.