Is not being able to enjoy a sign of CPTSD?

I'm just incapable of enjoying things.

Anytime I have to do something which is considered " exciting", I realised I put up a performance of enjoying, rather than actually enjoying it.

I have fleeting moments of enjoyment . But they barely last.

But actual enjoyment, it never happens. I feel I pretend to enjoy but deep down I feel nothing about things. My first response to travelling or meeting someone new or birthdays is dread rather than enjoyment.

My idea of enjoyment is being in my room, known I'm protected from the world.

Has anyone experienced this?