Please help me figure out. I am confused.

I am 27 M. I identify myself as a gay(As of now).

I started exploring since last year only, though I am not into hookups, so there were only limited encounters.

There has been a feeling in me that whenever I get into the physical act, after a while it feels so exhausting and after the act I also get a feeling of guilt. At times even normal kissing and cuddling also feels like I am forcing myself to do.Though I want to bottom, but all these experiences made me put a label of a being side on myself.

I am not all into girls(I am sure about this) and I long for muscular boys, but whenever I approach any such guy and tell about myself, they label me as being too choosy and some called me as asexual even.

What would you suggest me. Why is this happening,am I really asexual? Should I reach out to any therapist(would be grateful if you could suggest one in Delhi).