But this thing has been addressed many times in the game. The MC constantly pushes himself out of his comfort zone, he believes that this will help him to heal and become sociable. Even Nami was worried about this and warned him not to overdo it. Just recall their conversation at the lake, and later at Nick's, where he challenged Zara to a tennis duel.
So he struggles with his social anxiety, and being around people is one way to do that.
Another funny example, a movie night with Vic and Mila, when the girls started talking about their breasts and ended up talking about the vaginas. And Nami looked at Nika with suspicion, accusing him of not complaining about the topic. He replied that one way to get out of his comfort zone is to listen to this awkward conversation

And Nami baited him to the book club, she emphasized that Noji didn't want Nika there and piqued his curiosity.
But he clearly overdid it with socialization, after several years of loneliness and depression, he jumped too quickly into social activities, made many new acquaintances and took part in too many events. Hence the increase in the number of panic attacks and their intensity, putting aside the fact that he did not work through the underlying psychological trauma with Amber.