My manager is years younger than me, and it works. I've made peace with not wanting their chair, so I can hand them what I've learned without it turning into a contest. They lead, I offer my experience when it helps, and there's an ease between us that took me a while to find but feels good now.
More people experience this than they realize.
You work well under a younger manager, sharing your experience without fighting for their seat.
If this sounds familiar, the Library can help you find the bigger picture.