What do you guys do when you are feeling sad?

I recently broke up with my significant other of 7 years. I am extremely sad and don’t know what to do with my life. I don’t have many friends to reach out to, my significant other was my best friend. I thought I could handle the break up but I’m losing interest in my distractions (gym, tv shows, movies, video games). What should I be doing now ?

Edit: Thank you all for the kind comments and responses. Normally I'd try to respond to as many comments as I can but I've been trying just stay distracted for now. Appreciate all of your support. <3