As you pointed out, your question can’t be answered simply. It’s certainly possible there is a history of early abuse. It’s also possible that like many dads, your dad may be uncomfortable with your emergence as a sexual being. Many dads feel some attraction and pride in their kids at this stage, but their respect for the cultural taboos against acting on that attraction keeps everyone safe. Often the dads do some distancing during this time while their relationship with their kid transitions from dad-child to dad-young adult.
Even if you are not “out” to your dad, he may sense that your attraction is to men. He may feel some attraction to you that shames and alarms him so he keeps his distance. You may be picking up on his fears so respond by doing the same. These feelings are normal. Good boundaries keep everyone safe.
This is complicated stuff for many families. Therapy would likely help you answer your questions. I encourage you to give yourself some peace of mind by talking to a counselor.
You shared that there are many other distressing issues in your family. I hope family members are open to getting some family treatment so everyone, as individuals and as family members, can have a happier future.
I wish you well.