Social life in the late 20s

Hello folks, as the title suggests people who recently moved to the city especially in their late 20s go on about your social life? Do you still have folks whom you used to chill with before or have made new friends along the way? 27M here I moved back to the city after my PG andI find my social life to be non existent. It does take a toll on overall mood as well. How do you all deal with this?