Here is a article written by Brad Boreland. Brad is a veteran and cancer survivor. You might not agree with all or even most of what he says but glean something useful from it and use it to improve your current situation.
He is also an author and I bought his book at one of his lectures. It is pretty good and nicely laid out. Particularly the beginner.
https://www.muscleandstrength.com/expert-guides/over-40-muscle-building
SEMPER FI