Needing emotional support...

So I just got out of a ten month relationship that was turning toxic and my boyfriend basically lost interest and wanted to have sex with other girls and we broke up. It was a long 10 months of a lot of ups and downs and I honestly feel so lost and upset and drained and I don’t know how life is going to be after this considering I literally have no friends and I’m terrified. I completely told him I wanted no contact and that I was done. I feel so unimportant and useless and he was by far my first love and I really don’t know what to do