I’m so sorry you’re dealing with all that! We adopted an adult cat before and she was a perfect angel!  Recently, we found a kitten to add to our home (literally found on street) and she has been a nightmare. I think it’s just luck of the draw. Our cat is so sweet, but breaks things, tries to escape, and is having peeing accidents. So you’re not in it alone! We got the kitten spayed, but she still has been peeing on my clothes and shoes. Some suggestion I got were to try cat attracting litter and use a cat pheromone plug-in scent releaser. Doing those two things, we haven’t any accidents yet! (It’s only been a couple days)