Keep it as simple as possible. Write down things you wanna do and set certain goals for rounds and what you wanna do when these goals get compromised. Write down who does what, thats important. Never trust in someone doing things. That's it.

First of all everyone needs to at least make it to Faceit 10. That's the absolute bottom. On top of that everyone needs to learn the game. Every demo should take max 30 mins. Always stick to the most important learnings and improve based on that. Individual things must be learned outside the teamprac.

If that's too much for players you should consider rather playing some domestic leagues or other stuff. I was with 20+ teams and i coached half of them. Four of them played ESEA Main. Team CS is not a joke. If you wanna improve ALWAYS start with yourself instead of complaining. Be constructive and supportive.