Some of your “I’m not interested” is really “I’m scared I’d be bad at it.”

Disinterest is the most comfortable cover available for fear, because it needs no explanation and costs nothing socially. You cannot be bad at a thing you never wanted to do, so the preference quietly forms around the risk. It feels completely genuine from the inside, which is what makes it so hard to spot.

Think of something you have decided you do not care about, and ask whether you would want to be good at it if you already were. If the answer is yes, that is worth a look. Try the beginner version once, badly, where nobody you know is watching.