Get the absolute hell off of social media. All of it.
Choose a hobby and invest in it. Like pick up a nice expensive Canon or Nikon and get into professional photography. Get a bunch of art supplies and try painting. Pick up some instruments and music gear and get into music production. Get you a DeWalt saw and some wood and try a DIY project. Find something to dedicate yourself to, give you new purpose and skills, and be part of your new life and identity.
Have a drawer full of workout gear. Leggings and all. Consider a casual street or bar sport you can see yourself enjoying anytime. Biking, skating, jogging of course, table tennis, handball, whatever gets you moving and happy.
Read some good non-fiction, especially stuff about the male experience, and social psychology. "How to Win Friends and Influence People" deserves a spot in every man's study.