>>2 Yes! Absolutely. Things will get better. I had a friend who has the same exact situations as you, the friends (except for me), the abusive father, the girl who wouldn't love her back (she's bi), everything. She was at one point suicidal as well. Hang in there. Stay away from him, and try to find a safe place away from your home. My friend came everyday to my house to escape her hellhole. Her and her father got into a huge fight and then he left. She was lucky he didn't severely hurt her.
Find someone you can trust, and hold onto them. You can get moral support from us, but sometimes it's easier when you have someone in person. And maybe that person can be the person who helps you get away from everything temporarily..until you can move out and get away.
Suicide and self-harm isn't the answer. You deserve better.