Why does everyone feel so boring after college?

At Uni, I had dozens of friends (or at least acquaintances). Would form random study groups in the library. Parties were crazy. Women felt like genuine friends. Giant 100 person snowball fights. Football games were crazy. Everyone you knew went to everything.

Now, I moved and barely meet people or have friends. People and the internet say the only way to meet people is stuff like coffee shops, sports clubs, work, groups, volunteering. Women don't hang out, they hint uhh very strongly they only want dates. If I do meet people or have good conversation, it usually leads to just us sipping a beer. I think I've talked to 20 dudes at my gym and apartment, and they all go back to their phones as soon as possible.

Is it me? The economy? Whatever "maturing" means? I wanna live life.