Is this much loneliness normal in adulthood?

I am 24M who stepped into working life 1.5 years ago. Recently, on observing people around me, I have seen that everyone is frequently getting messages on WhatsApp and Insta. They often mention speaking to some friend over phone. On the other hand, no one messages me on WhatsApp. I have 2-3 guys with whom I exchange reels/memes on Instagram, but there is no conversation, just sending and reacting to reels. I have only one friend who calls me semi-regularly, other than that, no calls. I have no other social interaction. Trying to reach out to old friends results in dry responses. Previously, I thought that as we have left college, everyone is busy with their working lives. But now I am starting to wonder if my situation is abnormal. Can people here tell me normally how lonely adult life is supposed to be?