Is it normal to feel like a broken robot?

I keep having this fixation on a theme about a broken robot. I also feel like one, and have the strange sensation of internal, invisible scars on my body, or an amputation, or a part missing of me. I also feel like I'm not quite human, and detached from life and my body.

The theme/idea talks of a robot or cyborg desperately trying to fit into human society. They're changing their appearance, learning to act like people, but to no avail - there's still a strange robotic part of them that won't change no matter what. They grow depressed, bitter and resenting. They distance themselves from their body and workings of the mind. Eventually, they give up. They're now a broken thing, that they're still trying to strain and push to be different; but only halfheartedly. They accept the scars and amputations, but are still distant from the world and themselves.
This theme is always in my head, with the sensations, and whenever I feel it, this story pops up too. The sensation I have almost every day at some point.

Obviously the robot is a metaphor for how I feel, but why I feel this way is another question. I had a somewhat traumatic experience in grade school, perhaps that could have contributed to it. I don't remember or understand much from it, only that I felt very alienated and depressed.

I don't have any actual amputations, and not too many scars, and I'm most likely human.

How normal is this? What could I possibly do about it, regardless?