You're doing the exact same thing I did when I started; I said I didn't know what I was doing, and asked for other people's opinions, even though I didn't establish an audience, and none of the people who happened to watch me knew nothing about what I liked or could do. Honestly, just do whatever you can to feel like your time on YouTube is worth it. I make rants where I describe my thoughts. You could do comedy, gaming, or whatever, but only if it's fulfilling to you. Good luck!