How I'm a internalised homophobic person?

So I'm bi , I'm sexually romantically and emotionally attracted towards females..

But I'm only sexually attracted towards men and it's kinda very selective..and in my mind I always think that I'll marry a woman..

I'm somehow not that inclined towards men idk why !!

When I said this in my club ( which is lgbt community club ) they all started attacking me like I'm not in the closet and don't hide ...

They all started saying ki I'm homophobic I'm that I'm those... it's just a sexual preference but they literally all guys there humiliated me ...idk what I'm missing...

Pls suggest/give advice ...

It's not that I'm in fear of those blah blah but I don't hate anyone +--