I'm a man and I'm a chronic apologiser, and I think it probably at least partially originates from being physically abused as a child. It's easy to get in a habit of just apologising immediately for any sort of negative reaction so that you (hopefully) don't get severely beaten

I'm working on it and have improved a lot, but I used to do things like apologise to people whenever they expressed any sort of displeasure or discomfort, even if I had absolutely nothing to do with it and they couldn't possibly think I did... I used to regularly apologise to people when they complained about the weather for example.