At my age, there is a problem may old people have with muscle loss or loss of muscle strength. It is also very difficult for old people to correct the problem.
I have some weights that I use daily to preserve my upper body muscles. For my leg muscles, I do something similar to squatting; however, I don't squat lower than the level of my office-chair set.
Exercise while you are young. It will benefit you when you get old.
You don't want to become one of the gray-haired old people shuffling their feet as they walk very slowly through a store.