I sympathise artie. I'm 75 now and finally retired at age 69. But that was only for health reasons and if not for that, I'd probably be still working now, albeit less hours (I worked on a self-employed project basis, so would simply have chosen projects more carefully/less frequently/generally a bit nearer home rather than "anywhere and everywhere").
The problem is that if you really "loved" your work (as I did, in general) it's VERY hard to replace that "strange" feeling of satisfaction after a job well done - not to mention the money of course!
What I've done, with some success (not complete success mark you) is to take up:
A) More time in, plus expansion of my workshop (both a bit of metal and wood in my case);
B) Singing in a couple of local choirs (or at least, until Covid!!);
C) Bits and pieces of home and garden maintenance;
D) Writing (on a semi-professional basis).
AND an VERY understanding partner is IME, absolutely vital. Retirement, forced or otherwise, really does change your life (and your partner's).
Please note my comment above about "not with complete success". I still miss my professional life, sometimes more so than at others. BUT although the specific "hobbies" I've listed above obviously won't appeal to everyone, I think it IS worth pointing out the of the above 4 items, 2 are more-or-less "solitary/indoor" occupations, and 2 involve meeting other people on a fairly regular basis (or at least home maintenance and choral singing both did until Covid)!
I'll be very reluctant to try and advise anyone on a definitive basis, but to me the "key" (if there is one in my case) is that the above 4 main things involve a mix of both "solitary" and "collective" items (especially with new people). So I think it is important to concentrate on more than one activity/hobby, AND to be sure that whatever items you choose do get you into that sort of mix.
And don't forget that "one thing CAN also lead to another" - e.g. I joined this Forum to learn stuff (and still do). But I now also get some satisfaction in passing on through the Forum "stuff" I've learnt (often the hard way)!
HTH mate - IME it ain't easy!