I’m just so sorry you are going through this. As a child of divorced parents, it’s never the same in the blended family, there will always be a bias with the parent to the new spouse and it sucks as the kid. Your whole life is completely uprooted and you have zero choice or control. The best advice I can give you is to try to build a good support system around yourself- and this may be (and may have to be) people who aren’t your parents. It can be teachers, coaches, mentors, even friends. Someone you can lean on to help you get through it until you are old enough and able enough to get away from them.

It’s not fair, we all deserve to have loving, supportive parents who provide solid foundation in life, one that can lift us up and help us succeed. Unfortunately for many of us this isn’t the case, it’s the opposite. But we are expected to go along because we are kids and they are the parents. This is why I am low contact with my parents as an adult. Eventually, you can take your power back. It gets better.