I’m not sure if this will help but for myself I describe myself as 50% masochist and 50% submissive but in reality I think I may be 80% sub and 20% maso. I really don’t like pain but I definitely want it and need it in session and a good deal of it too. I want and need to suffer and hurt for a Mistress who enjoys it. There are times when she is hurting me to the point where I actually ask to myself why am I doing this but the answer is it is something I need and desire at a very basic level of my sexuality.
FWIW for me corporal is only a small component of pain because I can’t take a lot of marks. It’s more NT, CBT, ball busting etc and the general ramping up of discomfort to the point of real sustained pain.

I can’t really relate to masos who are not submissive and enjoy the pain for pains sake but everyone has their own kink. Pain is not fun or enjoyable for me but power exchange and suffering for a Mistress who enjoys hurting me are what I need.