I know, I work remote with people in 4 continents across 6 timezones. It simply doesn't work.
You can't teach people, you can't train people, you can't show anything over a phone or a chat.
On top of that, as soon as you have different timezones with little to no overlap. You cannot synchronise or work with your colleagues at all.
Remote work and remote teams should be limited to people who are already senior, fully autonomous and experienced. And even there, it's a constant battle and it takes a lot of self discipline.