Breakups

I’m really struggling to cope I have been in a relationship for almost 3 years and we just can’t get along no more and things ended Friday night and I just can’t seem to process it😞we were pretty serious and even though I know it’s for the best it’s going to be pretty hard, I also don’t have a lot of friends (2) but barely see them as they got boyfriends, please has anyone got advice for me on what to do to get my mind of it