I've been riding legally for 63 years and I'm 77. Florida allowed restricted license for - 5 hp bikes at 14. They didn't even have mini bikes then, but lots of European (not Japanese) motorcycles and of course Cushmans.
If you start at 12 on a mini bike.
Must be 77 plus if it maters.
I have a friend pushing 80 and jumps on his trike sometimes he even rides for a few miles.
Hi and welcome from Upstate NY. Sorry can't help you with your problem BUT as you have seen, there are a lot of knowledgeable people here who will be glad to help out.
As for the age thing - so what, who cares? Your as old as you feel and want to be in my opinion. Age is just a number - it's what's inside that counts and how active you are