I have a regular touring group but we don't go away together so often now. Some are older, some have (great) grandchildren or are caring for elderly relatives. 5 of us went to Austria this year, we used to get 9 or more.
If I want to go away and none of the regulars are available, I go solo. I really enjoy this, especially now my joints and bladder mean stopping more frequently. I take days off the bike and enjoy a day wandering around a historic city. I'm off to Spain solo in May.
I think my days of joining a random group of strangers, only known from their online name and posting style are over. Fussy eaters, smokers, gropers, itemised bill types, sexist/racist comments to staff types and those who can't keep their politics to themselves can all fúck off!
Rant over. Good luck finding your people but don't rule out a solo tour.