I feel like I am a bad person

I am 21 years old. I have done some mistakes not very while ago, some mistakes were unintentional and some were my bad choices. I regret about it a lot and I would never do such those things again. One of them is saying lies. I lied to someone, I thought it was right to do in that moment but if I could turn back times, I would stay honest. I have learnt a lot, I have faced the consequences of my actions and I took accountability of them. I have accepted the facts that I have wronged and what happened cannot be changed. And I have made myself a promise and a swear that I will never repeat the same mistakes. I want to be a good person, but sometimes I don't know what's gotten into me that I just feel lost and start doing some shits. How to control my emotions and how can I become an emotional mature person? Another thing is I don't know how to forgive myself and move on. I feel guilty for the things I have done and I feel like I am a bad person. I am so mad at myself. I want to move on and forward, but I don't know how as I hold the guilt for telling lies. I feel like I'm the only one who had committed that sin. I just want to be good and become better. How can I cope with this situation?