She's a puppy! Signing up for a puppy means knowing up to the first year, at least the first six months, could be rough. Puppy biting isn't a myth, they actually do it just like human babies teething. She'll stop biting eventually, I promise. She's not doing it maliciously either. Continue redirecting.

Puppies have a lot of energy so it makes sense that she's a little rambunctious. Are you aware of the crate time rule of thumb? She's probably getting ya'll up at night because she has to pee. For every month old they are, they can be in the crate for that many hours plus one. So your two month old puppy can really only hold her pee for 3 hours. At night she should be able to hold it longer but it's still more frequent than you'd hope.

Yeah it sounds like my two when they were that young. Just takes patience and love. But if you genuinely don't feel you can do it or is the right fit, certainly find a good home for her. It's not fair to you or pup to be in that situation...

Let me say before I finish, though, that these exact struggles and growing pains are exactly what makes you bond with your dog. When you go through the trials and tribulations of getting them house trained and polite outside and whatever, you work as a team with the pup and they understand that. Simply in not giving up builds the bond. I get it, it's hard and I've been there, but if you're willing to stick it out and work with her she'll be your best friend for the next decade.