Welcome Letmein. I have knowledge of walking a tightrope of someone with mental health issues, despite all the advertising and talk about it, in reality people feel unsupported, Just take it one day at a time and do something, even a coffee out or a chat with a friend each day if you can.
Wizabi, I am sorry you have been struggling, so hard losing all your birth family, sometimes though you just let go. Your sisters have each other, they are closer in age and have a closer bond which should make them more caring to you. If you have tried to reconnect and sort out differences and been rebuffed you try to put it in the past, A lot of us are left alone and make a different life.