I left toxic friends but now I'm lonely...

I realized the friend group that I grew up with is turning out to be something I just don't want to be a part of any more we are in our senior year and I feel I am simply maturing in a different way than them and I just don't have fun with them anymore. I've been distancing myself slowly and I've actually really liked being with myself I am being more productive and independent. But it gets really depressing when I'm alone so much. I mean I go to work and socialize with coworkers and when I'm at school I socialize a ton but I just don't have things to do outside of those things with anyone. Everyone keeps saying you will make new friends in college and I hope that's true but for now this is very depressing. And I need friends but in my senior year everyone's got their own friend groups so I don't know what to do.