Train4sports offers a wide variety of affordable online personal training programs designed specifically for your requirements.
All the programs include 24/7 message contact from your personal trainer, 24/7 message contact from your personal trainer, regular check-ins and programs can be made to be suited for in-home or in-gym.
I don't mean to be a negative Nancy but the site looks like complete garbage on mobile. Real basic HTML stuff.
Anyway, good luck to OP selling training plans to people that you can't actually see work out. You'll make more sales with a better effort in the design department though.
Watch Athlean X on YouTube for some pointers on how to market your do nothing, sit behind a computer screen motivational stuff.