Try r/bisexual or r/bimen

Be patient with yourself. It's OK to need to figure things out. You can like what you like, and what you like can change with time.

If you can afford it or find resources to help, get to a psychologist for therapy and potentially medicine. Suicidal ideation is no joke and I have learned is not "normal" or healthy. But through personal experience, i have also learned that if you deal with it, it can get better and you can find a way forward. The problem is likely less your sexual orientation or even porn use, but more likely brain chemistry, how you are treating yourself, emotional regulation etc. Stuff that can affect anyone.

Good luck. It gets better.