Hey, I'm new and I need some advice

I want to make my first game, very cottage core and dark themes (it's a silly mascot horror for my friends) but I have no clue where to start, I have some drawings and ideas but no knowledge on coding and how to do anything at all. I'd love help on how to 3d model, where to get assets for background items and how to code in game mechanics? Please I could use anything to assist me, I'm genuinely so desperate