How do you make friends at Miku expo?

I'll be going to Miku expo this year in Düsseldorf with my boyfriend and we already went in 2024 but I didn't talk to anyone there except my boyfriend :( from what I've heard it's common to make friends there though? Or at least talk to people. How do you do it?? I don't want to annoy anyone but I know virtually no one irl who likes vocaloid and would like to meet new people