How the hell do you get karma

I have one community id like to be a part of and I can’t because I haven’t got enough karma, thought that’s fine, I’ll try and get some somewhere else. But i can’t because i need karma to post there too?????? I’ve been trying for days and I’m seemingly wildly unfunny because no one upvotes my comments and all my advice is going down like a fecking lead balloon.

Whats an unhelpful unfunny girl to do???