Hopefully making theology simpler to understand! (2 Corinthians 1:12)

If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.
1 John 1:9, ESV

There is no forgiveness without confession and repentance.

Give your sin to God, and find peace.

If it helps, tell a trusted Christian brother or sister.