Welcome to the site. This is a really sad story, but "how to cope" is not an interpersonal problem we can help you with, unfortunately. If you have a question about how to confront your parents or how to get information out of them about what's going on, or telling them how their actions are making you feel, those are things we can do. Asking how to cope or what to do, is probably best directed towards a therapist who can form a more personal bond with you and get more context and details needed to help with that. — Erik 2 mins ago