ngl, if that's the first time you're doing a game, or coding at all, maybe before doing this cat lady thing, you should finish one or two smaller learning projects, just to get a hang of the game development yes. Making your first game is a bit harder than it sounds like, but after some time you end up getting used to it, so maybe do a couple of learning projects before trying something bigger.
Also, i didn't understood the exact kind of game you want to make, or if you want to do a visual novel instead, i personally use unity, as it's pretty learnable and very versatile, but i wouldn't recomend it for someone who wants to make a vn
Last thing, i don't think there is an age where is too late to learn game development, like, for older people, i see coding as a pretty hard chokepoint, but nah not only AI exists, but also you can make games with relatively minimal coding (or just get an asset pack with some scripts)