If I had 10 seconds to pick five strength exercises I'd give (most of) my clients for the rest of their lives, these are the ones I'd pick. While I would encourage most people to be versatile in the gym, these moves tick the boxes for being compound (multi-joint and multi-muscle), progressive, beginner-friendly, effective, and good for your joints and mobility.
The benefits of strength training are well-documented: stronger bones, joints, ligaments, and muscles; a higher resting metabolism (lean muscle is more metabolically active than fat); decreased sedentary time, and a little boost in mental health. It's a longevity tool that we know becomes even more crucial after 35.