Ok I think this is the most helpful answer I can give to your question. You do random crazy a** vlogs, you're trying to find your "niche". I think you may be over complicating this, it's not really like you go and find them, it's more like you start making the chance of them finding you more likely. But one thing you can do to "find your niche" would be looking for forums that center around what you do. Now I highly doubt there is a "random crazy people" forum out there, I mean there could be lmao. But what is more likely is there is a Monty Python forum, or a Whitest Kids U Know forum, find a forum dedicated to some famous weird comedian/comedy troupe, join it, befriend people, and then when you feel like you have friends there, talk about your channel. But I don't even do that personally, I just upload content and ummm... hang on this forum lol