I used to run a lot in the 70's and early 80's and Brooks were the best shoes I ever had.
Once they wore out, I had to switch brands since they were no longer available where I lived. From that point on, it was all downhill......knee pain, shin splints, lower back pain...etc. Finally had to give up running.
The knee pain is explainable. Your tendons tend get brittle as you age. If you run about 400 meters at a time, you can still run. Run 400 meters, walk, run 400, walk