There is only one solution to this problem, and you are going to hate it: small talk.
When you approach a group of people, start by asking, “May I join you?” Then, tell someone you like something about their hat or you know something about the logo on their shirt. Do you know who’s playing on the screen? How are they doing this season? I’m not a sports fan either. What are you drinking? Is that brewery around here? I heard they use twice the hops. A buncha bullshit like that. Doesn’t matter. Be friendly and talk about bullshit. Call it being a tactical introvert if that makes you feel better.
If you don’t know one of them, ask their name. Repeat it back to them. “Good to meet you, X”. You might forget. That’s fine or even good. Ask them again. They probably forgot yours too. I use this as an opportunity to make a joke “You forgot my name!” “You forgot mine too!” “At least I cared enough to ask!”. People care that you try. Especially if they have a difficult to pronounce name or aren’t from your country. Don’t give up like everyone else.
Join whatever actual conversation they are having or ask what they are talking about. Listen. Drop a one liner. Make small contributions. When presented the opportunity, ask the person you are interested in a question related to, tangent to, or even better about their contribution to the conversation. It is at this point where conversations split naturally anyway. Switch seats or go somewhere else to keep talking 1 on 1.
That’s what really sells it. How low effort are we going to go?