Real talk, you can go buy a gun today and you probably should (maybe not and maybe not today). It's twenty minutes. Then sign up for some how tos, probably at the place you bought it from and take a few classes. Shoot until you get a good feel for it, then plan to shoot every now and then or as often as you want.
Yes, it's a terrible industry run my terrible people. No you're not John Wick, but fascist need speed bumps, and the police don't care about you at best.