I have no friends and no life anymore. What should I do?

Think about what makes you you. Act like yourself, there are people out there who may not accept you for who you are, but there are people who will take you under their wing and let you out when you need to be free. There are people out there who will give you space when you need it. Find those people even if it may be hard, there are people like that out there. When you find friends, when you find trust in those friends, still, be aware. But when you find friends, when you trust them, tell them about your past, tell them. I know you might have those "friends" who leave you the moment you tell them, but you will find someone (or more then one) who will love you for who you are.

find what makes you happy, if needed try many things until you find what you enjoy. then you will definitely encounter people who share the same passion and that would be a good way to start new friendships.

Try to find new friends, the ones you lost (if their worth it) try to get them back, go out a bit more and maybe find a new hobby.

Expand your mind. Make friends make a life for yourself. This is not the end - it’s just the beginning. Open your mind to new things, maybe take on a new hobby to help this. Sometimes life can be dooming when we have no one to share it with and we feel as if we are alone. It’s just best to know what you are not - if you don’t have any family that you can speak to then contact local groups and get yourself out there and mingle amongst other people in and within your comfort zone. Make new friends.