Hello there, no doesnt’ sound stupid at all, and I don’t think it is irrational.
Ages of your kids sound a lot younger than mine, but if you ask me it is a case of habit.
I think people get out of the habit of knowing what to do with social situations.
So the answer to that is to practice.
How about a gbrad local group?
Main thing is, to start somewhere. Something you enjoy that you had forgotton about…
Some try dating sites, I’m not a fan myself, but as long as someone can handle it and stay safe don’t see there is anything wrong with trying.
Otherwise evening classes?
College course?
good luck
jj