Here are some exercises that you can try if you are getting into training over the age of 50. They're pretty good for any age, covering strength, core, and balance.
Don’t shy away from kettlebells. They are a unique way to train, adding a ton of instability while making you have to correct and stabilize your form in order to grow stronger.
Every concept is prone to oversimplification and misunderstanding, but “functional training,” as overused as the term may be, has led to a wonderful re-exploration of human movement.