Hypocrite friends??

I'm currently in Y11 and moved countries in Y9. Never had any problems with english understanding or speaking but I really struggled making friends since I'm an extremely shy person. I finally settled with an amazing group of friend 4 months later and everything was perfect as far I was concerned up until a few months ago.
Most of my friends are neurodivergent and as a neurotypical I always try my best not to over stimulate them or cross their boundaries. How I recently noticed whenever they are joking amongst themselves all is good, but as soon as I say something relating to that topic I'm given questions like "what" "what are u on about" "it's just not the time to joke" I do understand the fact that it is really hard to take a joke sometimes when they are overwhelmed. But I'm being treated differently. It's almost like they can make as many jokes about me coz I'm neurotypical and possibly can get my feelings hurt but when I do the something slightly similar I'm being challenged.

Am I on the wrong pls be brutally honest

You say "whenever they are joking amongst themselves all is good". Is this neurodivergent people joking about being neurodivergent? If so, then as you're not a member of that particular "club", you don't get to join in.
It's exactly the same as if a short person where to make a joke about being short. That's fine. A non-short person simply can't make that same joke.

There's 2 "wrong" things here. Not so much wrong, more a case of things you could do better.
1 your self image that you're extremely shy is a limiting belief. You weren't born extremely shy. The main reason for your extreme shyness will be you getting into the habit of being extremely shy. It's something you should give some priority to breaking. People that face down their fears tend to have better quality lives.
2 settling on this largely neurodivergent clique. It's fine that you're friends with them. You should also have friends that are neurotypical. Aim to get more than 1 friendship group that you hang around with.
If your jokes are insulting, or are socially uncalibrated, you should look to adjust the nature of the bulk of your jokes.
The odd insulting or uncalibrated joke is OK. It's when it's joke after joke that's putting someone down that it's too much.
If your jokes are fine, you can joke about them telling you not to joke. If you're amused by your jokes and no-one else is, that's not too bad. It's better than being straight and heavy about everything - when mixing with neurotypical people.
With some groups of neurodivergent people a reasonable habit to have is to say "I'm joking by the way" whenever they don't laugh as they may take a lot of things literally, because of the way their brains are wired.
Jimmy Carr has made a career out of telling jokes that are insulting to the butt of the joke. He gets away with it because he does it in theatres with large audiences that have paid to be entertained by his style of humour. Context and social calibration counts for a lot. There are other ways to get away with insulting jokes...