Do you have any pets? (Are you allowed?)
Same with me when my daughter left home. I did crafts, read books, and generally enjoyed my freedom. For the first time in my entire life I could go somewhere or spend time on myself such as walking or whatever without having to check in with someone else's plans.
We need to talk! I went through this beginning two years ago, but I don't have time at this moment, so pls message me.
I think you may need to get out more. Join a club?
Get a bird and when you get tired of it just kill it