You did not say what country or state you live in. If you are in the U.S., "transgender friendly insurance" means an Obamacare compliant insurance plan.
Normally you can only enroll in an Obamacare plan in November with coverage to start in January, but there are some exceptions, such as having lost your existing coverage through circumstances beyond your control. Having been forcibly removed from your parents' policy probably qualifies, but you should check with your state insurance exchange by going to their website.
I am sorry about your parents. But, FWIW, for my entire teen and adult life I deeply suppressed my "feminine side" and tried my hardest to be everything my father wanted me to be, and it really did not matter. I still did not have my parents' love and could never trust them. (Long story).
Now that my parents are very old and no longer healthy, and can no longer meddle in my business, I can make some kind of transition. I make sure they are taken care of, but I keep some distance between them and myself. Dad got in my head and "owned" me for too long. What's left of my life is for me, not for my parents.
Do what you have to do to be yourself and protect yourself.