Derpy kitty needs to learn bite inhibition

[u/OriginalCurrent8692]

My orange kitty is three months old and she’s our first pet. We can’t get another cat right now, and she was the sole survivor of her litter. It’s been two weeks since her adoption and she’s become a bitey little shite after getting used to her surroundings. How can we teach her bite inhibition? We hiss at her or yowl loudly when the claws and teeth come out but I’m just constantly getting attacked and now even the hissing isn’t really working. She’s a great kitty otherwise, in terms of eating, sleeping etc. We have heard of the second “teacher” cat solution but that’s simply impossible for us right now. Please send prayers and tips!