We aren't discussing the risks of porn consumption.

We're talking about you trying to masturbate without any visual stimulation.

You've just answered your own question. Your penis works fine, you can masturbate without looking at porn, it's just difficult because you don't have any visual stimulation.

You might have more luck once you get your sexuality figured out. Anxiety isn't great for erections. Something like 80% of erectile dysfunction is mental rather than physical. You also seem to mix up low libido and erectile dysfunction. They aren't the same thing, and you're confusing yourself. If you can play with it, and make it hard if you try, but aren't interested in sex/getting off... that's a libido issue, not an erectile dysfunction issue.

I strongly suggest you stop focusing so much on whether or not you are gay, bi, or straight. And just follow whatever your penis and your brain tell you you're attracted to. Your anxiety will clear up, and so will your problems.

As long as you keep stressing about it, and keep repeatedly asking people on reddit for help because you're having difficulty coming to terms with and figuring out your own sexuality. You're going to be subconsciously stressing about it, and it's going to interfere with your libido.