What do people in their 30s do nowadays?

Its so difficult to find new friends na specially if we're all WFH, but how do you guys maintain your friendships or gain a new one? Ive joined pilates and gym classes in the aim of meeting new people (and get fit) but so far, 3 months in and I still havent made friends or had really valuable conversation with anyone. Is this what adulting feels like? Im tired of adulting lol