Went through something similar with our daughter when she was 18. Must be something about that age.
She was awful and my bipolar was out of control to match.
Me and hubby finally got on the same page and wrote a ‘contract’/house rules. Told her she had two weeks to think about it, and either sign it or move out.
She moved out a week later with her boyfriend into a share house. She learnt very quickly that it wasn’t just mum and dad who had house rules. Flat mates had them also. Lol.
Today she’s a lovely 20yr old. She lives 20min walk away. Comes over most weeks and cooks dinner, paints my nails and is just eons from her 18yrold self.

Hang in there. Things may get worse but they also can get much better.