Hello Yiaaaou: Thank you for bringing your concern here on PC. I see this is your first post. Welcome to Psych Central. The Coping with Emotions forum, here on PC, may be one to take a look at. Here's a link:

https://psychcentralforums.com/coping-with-emotions/

And then here's a link to a listing of articles, from Psych Central's archives, on the subject of guilt & shame that (hopefully) may be of help along with links to 2 additional articles not in the listing:

Coping with Guilt | Psych Central

Stop Beating Yourself Up: 8 Tips to Overcoming Remorse

How Do You Forgive Yourself?

I hope you find PC to be of benefit.