I know people in their 50’s doing it. I know people pushing 60 that do it. And more. If your body can keep up, keep at it.
But if you’re looking for something to branch into, forensic work, i.e., videos for the legal profession, could be one way to go. As in all cases, lower equipment costs and new technologies lowered the bar for entry so there’s lots of competition. But the hours are better.
Another growth area would be to specialize into a niche like recording oral history for families and archives. You’ll need to partner with a good interviewer, or learn how to do that yourself, but I can tell you it’s rewarding work, if not very “sexy”. And a growth area, because of aging demographics and a desire to keep family history before memory loss takes it away. It’s a marketing challenge, for sure. But there IS a market there.
Find a local or state government media job covering council meetings, etc. Pay’s low but the work’s steady. Benefits and pensions may be available.
Work in independent journalism, freelance correspondent documentary stuff.
A niche area that might pay well would be 3-d capture and digitization of objects and locations, for architectural and many other purposes. Scanners mounted on drones, on jibs, etc.
Something I’d personally like to get into; projection mapping video in various places. For art installations, concerts, marketing/sales/conventions/sports (ever see projection mapping done on a basketball court?)
To make a career that pays, I give the same advice I’ve been giving for over a decade: find a hyper-specialized niche where there is less competition, and master it. I’ve seen people make a living just doing pro photography and videography of prize livestock. And people that shoot rodeos, beauty pageants, car racing. People that specialize in coverage of vacationers on cruise ships or at resorts. People that just shoot hunting and fishing media. Boat races. Stop motion and time lapses. Fencing matches. Underwater work. Skiing and boarding, of course. Cycling… And all the other activities people do. Maybe, ask yourself, what do you have a passion for, outside of what you do now… and is there a community of those people that can be served with good video? Some of these careers need more than just camera skills or editing skills… they may need producer and writing skills. You may need to retool your skillsets to realize a better career.
Good luck, hope you find something that pays you for your passion.