I totally understand what you're saying about being an apologizer.

I lost both of my parents at a very early age but for some reason my brain decided that it was all my fault. I then spent a considerable amount of my life feeling guilty and sorry for something that was totally out of my control and nothing to do with me. It was totally irrational to others so I hid it until I couldn't hide it any longer, but in the meantime I did become a chronic apologizer.

It was almost like saying I'm sorry I exist when others don't. I don't feel like that now.

If I see this in others I don't think of it as a flaw, I see it as a sign of sensitivity.