I'm not an expert in those but Type 9 generally means you are very empathetic but also very social. INFP broken down- I means you are finding more energy alone than with crowds. Or small groups rather than large. N means you like to plan stuff and think in big pictures. I feel that N's are generally more analytical whereas S focus more on factuals. F is feeling so you are empathetic, this compounds your Type 9 well. P means spontaneous or reading situations rather than judging them and analyzing them.

All combined, just based on types alone it sounds like you would be someone who is very empathetic, very good at 1-on-1 and intimate setting relationships, and you pay a lot of attention to the few people you are talking to. You probably want to understand everyone individually. Discussions are not just a bunch of people talking, but people you empathize with communicating in a much deeper way. Perhaps part of the reason you dislike group scenarios is because you aren't really spending time on each individual.

If that sounds true then maybe the approach is to just let yourself have intimate, small hangouts, and build relationships that way. No one said you need to have big group hangouts. And even if you're in a big group maybe the goal should be to pull a few people off to the side and have more intimate conversations, 1-2 people at a time.