I dislike living alone

I cannot sleep since my ex left (broke up 1/4). And I hate being by myself. It’s peaceful but humans need other humans and I don’t have anyone like I used to. My friends got busy, and my family too. It’s just me and my puppy. I need to meet new people, but I don’t know how. I work from home and stay at home a lot and since it’s my own house I don’t have my family in the house like I have with previous breakups. How do you people enjoy this.