[slededit]

In your case I think the solution is pretty clear. Try hanging out more with your colleagues. If you don’t enjoy it then consider it “work” and part of the job.

You don’t have to stay the whole time or even talk too much. Just make an effort to be there which will be noticed and appreciated. It’s ok to leave early as long as you do so quietly.

The flip side to you not socializing with your colleagues is they consider it a rejection by you.

These events are supposed to be fun and for you they are not. I get that this isn’t fair but if you want to solve the problem of not being seen as a machine you have to try.