How to excuse self at a party to mingle??

Hiya 👋

This is one of my rough spots. I find it hard to move around at a party type situation. And I don’t HAVE to do that but say I get stuck in a dull convo or say I like the convo but want to talk to more people & stay in touch with that person, has anyone got any tips? I feel really rude doing it.

I heard some people at an event once say “Nice talking to you. I’m gonna go mingle” and I felt free to do that myself. I had met someone to do that WITH so that was great. But this is gonna be me going alone – meet up event lots of people potentially any tips? I tend to get stuck where I’m sitting?

Which doesn’t have to be bad if I’m clicking with people but if I’m not or I wanna meet more people there, any tips on how?

It’s the exiting the convo that’s the hardest part of that for me?? Thanks in advance!

Also, if I DO want to do a number or social media swap with someone after a good convo – cos if you don’t act that fast on meet-up often you never see them again! – how can I do this more easily I’ve rarely done it also how do I know I won’t regret it even if they agree that there a decent person? I have a fear of doing that & then regretting it. And with WhatsApp I get stuck having their profile photos on my phone forever unless they block me no matter WHAT happens & that makes me reluctant too 😂