You are not alone
We all have done terrible things, it is not too late to ask for forgiveness and accept that things happened for a reason, for some it is a lot worse than others. But you have changed now and to those that still assume that you're still the same person from before, let them. We cannot control anyone's feelings, you can be the most sincere quiet person and the people around you will find ways to judge you. Let them. It is only you that knows yourself and God. Just as long as you have a clean soul and clear mind you will be at peace and the same people around you will feel the same way. And just pray for those who mistreat you. God is always on our side. God bless! Hope you have a merry Christmas and a happy new year. You are not alone because I have been there as well.