More:

I know you’re trying to help me. I know you’re doing your best. I know you haven’t given up on me. But you have given up on apologising.

Your most recent apology to me started, “I’m sorry if…” This is a turn of phrase that <mutual acquaintance> calls an “unapology”. It sounds like you doubt you’ve even done me an injury. And if you don’t think you’ve really hurt me, how can you be sincere in regretting it?