Craigers, I am similar age and about 3 years ago I perforated a disk between through football (soccer lol).
At this point i changed my mindset to training; at that point I had been in the military 18 years. I need to change how i trained to ensure longevity; i dropped squats and dealifts (i know this goes against grain) but mentally and physically i couldn’t do them at a significant weight.
I instead took on calisthenics, which i believe will be perfect for you if you’re beginning to get back to fitness.
The key is it builds all from body weight (and some additional weight in vests or kettlebells).
The biggest benefit i have is now my endurance, I just never get injured or have major aches post round (usually walk and carry). Additionally, calisthenics is huge on core strength, a vital component to swing speed.
Now i will caveat that my swing speed hasn’t significantly improved despite using speedsticks etc but my overall game has due to heightened fitness.
I appreciate this style isn’t for all but I’ve always been firm in that, if you can’t do certain bodyweight exercises (i.e pull up) can you justify trying to lift heavy weights. At the very least, use calisthenics to build a foundation.
My average drive is now 240 (up from 210 2 years ago) so something is working.
Good luck with your journey.