This is such a strange thing to hear, as someone who also has gone to the gym a couple times per week for my life with a lot of different gym buddies.
I would suggest considering a reset of your gym routine and gym knowledge, possibly with the help of a physical therapist to see what you’re doing wrong.
If you’re going to one of those gyms that encourage dumb things like doing heavy lifts in a timed competition format or other bad ideas that were trendy in the 2010s, I really recommend getting out of those environments.
I use the weight training to surface the injuries to make me aware of what I'm doing wrong in daily movements. I might finally be past this and able to just go in and push weights but it's taken years. I feel like it's down to the body I'm living in and what I consider a pain threshold, not any risk taking or lack of information.
You don’t need to be pedantic about the 80% number.
Some people believe "high intensity" means lifting as much as possible as fast as possible, I'd say more reps and deliberately slow movements are as intense for the purpose of staying in shape/healthy.
Most body weight exercises are virtually impossible to fuck up to the point of injury, done properly they'll keep you fitter than 99% of the population
My son is and once subluxed his shoulder while running