Definitely hard! I was there a year or two ago but managed to break through and make dancing friends which has been really good for me. One good way to get ready would be to try and have fun dancing in the mirror alone. At least get used to moving and get a basic hip movement and tap/step to be automatic so you don't have to think about it. Like others have said, most people are at clubs (esp. queer clubs!) to be social and relax. There might be one or two jerks but they are genuinely outliers, and no one is going to really notice you until you try and strike up a conversation.

Wear a simple outfit you feel good in and is comfortable to move in plus one or two statement accessories. A lot of times people will say something nice about them because it feels good to be nice, or because they are also awkward and are looking for a way to start conversations. For example, I usually just wear out jeans I like and a white t-shirt or a fetish top depending on the event with a fun belt and earrings. I've met a lot of people in passing who say something about one of those two things!

It also helps to have a few kind of oddball, low-stakes, generic questions ready to go so you don't get too flustered until there's an organic hook to the conversation. I always ask people their favorite color. One time, I was talking with this guy and we weren't really connecting. Then I asked him, he said 'blue', I said "what kind of blue," and then he told me about the Blue of the Crater Lake and we talked about colors and water for like an hour and had a great time. People are there to take a break from themselves and the "normal world" (esp. at queer events!) and are more accepting of weird or dreamy behavior!!!

Ultimately, you should listen to your gut and your body about how you are feeling. If it's really not somewhere you feel comfortable or ready to be by yourself, you'll probably be happier calling it an early night and not being whiped out the next day. Not every space/club/party/night is going to work for you and that's okay. It's important to put yourself out there and try and big big big kudos to you!

I can honestly say that starting to dance and dance with other people has been one of the most important steps in building a healthy relationship with my body and sexuality. It might not be your path, but that's why I put so much into this lol.