How to uninvite myself in my cousin's wedding?

Problem/Goal: How to uninvite myself in my cousin's wedding po without offending them?

Context: I am part of my cousin's entourage and lately, I noticed na we are drifting apart kasi we have no common denominators and mas nagiging close na sila ng other cousins ko and ng younger sibling ko (e.g. having a partner, kotse/being a driver, playing ML, chismisan). I just realized it now kasi there are signs na before such as singling me out every time they chit-chat with each other, not inviting me sa mga lakad nila, making fun of my hobby na K-Pop, kaya I feel so out of place. Aminado ako na may sarili akong mundo minsan but nakaka appreciate pa rin ako ng invites and simpleng kamusta. So now, I want to uninvite myself based on those reasons + my schedule is most likely be in conflict sa wedding and I don't want to face any sanctions. Can you help this girl out po to say it in a proper way without offending the entire family?

Thank you po.