Wolf
I don’t know what you have or haven’t done in your life. However I’m sure many of the Baalei Teshuvah and Geirim that we have today have done a lot worse. Many of done 2 of the 3 chamuros. Hashem accepts sincere Teshuvah from anyone. Hashem loves you even if you have sinned greatly. The yetzer tries knocking us down and telling us that we are lost and we have no hope. He is a big liar it’s what he does best. Don’t believe it for a second. If it were true that one can’t do Teshuvah he wouldn’t try so hard to put us down and make us think we are hopeless. He doesn’t like losing customers.