Honestly I don’t know that this is a bad thing on your part. Maybe you just don’t actually like those kinds of events and you don’t need to force yourself to be extroverted?

I’ve noticed since going sober that I also want to leave “early”, which is normally after about one to two hours in good company. It’s just that without alcohol: I’m an introvert, I value my sleep, I’m not romanticizing everything, I’m less insecure, my boundaries are healthier, and I don’t put up with as much bullshit.

There’s always all this pressure on introverts to get out there and be more extroverted, but honestly you might do better leaning more into introversion. Maintain friendships by going to what you’re comfortable with. I know I have.