I'm in my 40s, and single, and (sadly) childless.
This weekend, it went like this:
Saturday:
Exercise class - AM
Home for shower, hair mask, pamper.
Met my Mum and went to a local festival in the afternoon, and had some street food there.
Sunday:
Bit of a lie in...
Brunch with a close friend
Wandered IKEA together
Home for dinner, laundry, etc.
Read my book until bedtime.
Not an entirely typical weekend, but I might otherwise go swimming, see other friends, go for a cycle, etc.
There's lots to do to keep yourself busy, happy and fulfilled. I hope that you find some comfort and happiness in the way forward.