The only "wrong" way to start something is to not actually start.
Some people might toss you at whatever pet interest they have in the broad skillset which is gamedev. Tell you it's fundamental.
I won't.
Take The Frizz approach. Take chances, make mistakes, get messy!
You can download a FOSS game engine RIGHT NOW (Godot). Start small. Fuck with it until your questions become specific. Once you know what you don't know, but need to know, that's what you should learn.