There is no way that’s true. god will forgive *anything* if asked through the sacrament in confession.
If you haven’t gone, please go, and if you have gone, then please go again and tell the priest your issue. I must say that this type of talk is troubling because you are under severe spiritual attack! But not to worry.. many a Saint has been where you are... So, praise God for being in good company of the communion of Saints!!
I do truly suggest adoration any chance you get. Christ will never grow tired of your presence before him. “My guilt has overwhelmed me like a burden too heavy to bear.” Ps. 38:4“Why are you downcast, O my soul? Why so disturbed within me? Put your hope in God for I will yet praise him, my Savior and my God.” Ps. 42:11“And He said to them, 'My soul is deeply grieved to the point of death; remain here and keep watch.' And He went a little beyond them, and fell to the ground and began to pray that if it were possible, the hour might pass Him by. And He was saying, 'Abba! Father! All things are possible for You; remove this cup from Me; yet not what I will, but what You will.'" Mark 14:34
You are not alone in your feelings for many have felt that way. look up depression in the Bible... You’ll find David, Elijah, Moses, Jonah, job, and more... But look where they are not that they put there trust in God, and His son.
Doubt.... it’s poisonous to a soul, but it comes from Satan. Anything at all that lets you believe God has left you, comes from Satan.
Christ didn’t do what He did for nothing, Christ died for you.
Just sit back and imagine... Christ is praying before picking up His cross.. His body is already in critical condition... He knows he has to die in a brutal way... But He looks up at you, and back at the cross... Then he looks at you again and says “You’re worth it”....