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https://mtntactical.com/ Are you looking for a place to get training routines for you from professionals, and designed specifically for your desired goals? Check into MTI
Here's one of hundreds of example of one of their programs
https://mtntactical.com/.../mti-45-daily-training.../this program is one I use for 45+ age to maintain fitness without injury
I use this group (Mountain Tactical Institute) for physical training routines, coaching and tutorials online for exercises. They fully support their products and give you advice as needed while answering any questions you have. When I was training to go back to basic training at age 59 I used their products and support exclusively. Later I purchased other programs to modify the intensity of the routines focused more toward maintenance. Their staff and program is designed, evaluated and tested in-depth and by professionals. They have hundreds of job specific programs relating to military, Police, backpacking, triathletes, competitors in every sport and more. All their programs include video links on every exercise and how to perform them efficiently and safely.
Be sure to check out their products, I can't more highly recommend them!