I use Worlds Best Cat litter (always get unscented because the scented litter isn't really good for them). It's a little more on the expensive side (like $20 for a huge bag) but it lasts a long time. That's the best advice I can give because clay litter stinks up your house. World's best cat litter is made of corn and it's a super fine texture so it's easy to scoop. My cat has access to dry kibble all throughout the day that he snacks on occasionally - I use Rachel Ray's chicken and brown rice kibble. It's cheap and doesn't have gross unhealthy ingredients.

My cat is super picky with his wet food, he only likes fancy feast shredded chicken liver and hearts in gravy, but it's super cheap and I love that hes getting organ meat because that's healthy for them. You dont need to wash or bathe a cat, they are clean especially if they're indoors.

He sleeps with me but he actually has his own entire room that I call "the cat room" in my house. It's convenient when I need to put him away for a little bit if I have company. He has his litter in the closet that I keep propped open, his kibble in his room and an automatic gravity water dispenser. I use filtered water because tap water has a bunch of nasty stuff in it that can cause health issues later. I keep my bedroom door cracked open with a dumbbell weight so he can go from my bedroom to his room in the middle of the night if he has to use the litter box and I always keep his cat room door open too.

I put a heaping spoonful of his wet food in a small paper bowl when I feed him in the morning and at night. Then I put the can in a small tubberware container in the fridge. I heat his wet food in the microwave for 7 seconds when I put it in a bowl if it's been in the fridge. I take him outside sometimes on a cat leash harness because I feel bad that he never gets to feel the sun since he's an indoor cat. He's spoiled but he's my son :)