A zoomer once came to Mozart and asked: “Mr. Mozart, how do I make a game from scratch, with all my own custom tools and make all of the art and sound for it?”
Mozart said: “That, I’m afraid, dear child, is impossible.”
“What!?”, replied the zoomer in apparent surprise, “But Mozart, you did it!”.
“Ah”, said Mozart. “But I didn’t ask how”.
Too many people ask how to start instead of just starting. It doesn’t matter where you start, just start. Make sprites in MS Paint, cobble them together with RPG Maker or something.