A few things:

-When it says that your players need two more practices, it's enough to do a very easy drill with one player twice. I would not skip this, my impression is that you team performs worse when "not prepared". Like not bad, but not great either.

-Cant you find any offers to farm tokens? Getting a handful would enable you to sign scapegoats, is players you can use for training purposes only. Don't matter if they are 1-3 stars. But they will let you get full bonuses and maybe especially level up your training ability. I've started to get some 4 lvl drills and they seem to be pretty great.