Does age matter? All depends on how you look at it.
It's not a deterrent to enjoymet, but you're probably never going to be able to throw a 450ft spike hyzers.
57 now, started when I was 50 and got serious about the game 5 years ago.
I can putt, approach game is sound and my accuracy is spot on inside 250ft.
I lack distance. I average around 320-330ft with the occasional 350+.
Have to know your limitations and work to improve your short game. I play with guys who can bomb, but I often beat them (especially on a wooded course) because I get in very little trouble and have a lot of finesse.
Lots of videos out there to help get your form down. It's a work in progress.
As for discs,Take a read through this thread, it might help. Best thing I ever did for my game was to follow this advice for a few months. It totally changed my game and outlook. Quite the reality check.
https://www.dgcoursereview.com/forums/showthread.php?t=32790
As for drivers, try some lighter weights. I have found 160-163gr to be my sweet spot. Too light and there is a point of diminishing returns because of the havoc from wind, but on a calm evening, 150class discs can bomb.
And try not to chase distance by buying high speed discs. If you can't get a DX Teebird to 300ft, A Tern is going to cause you more trouble in the long run than the 1 in 10 drive that gets you to 310ft.
For me, there is nothing nicer than watching a disc fly the way it was intended to. And with that, buy an Elite-X Comet. When you can throw that the way it's intended, your disc golf life enjoyment level will soar!
Best of luck and welcome to the game