How to train players? pls don't ignore

I am f2p player and I've 500 mill coins and i daily place order for 69ovr players in the market and it's very time consuming so i only end up getting 50 to 75 players daily from the market.

i heard about the exchange option but looks like it's gone now 😐😐 what do i do? give me tips regarding market players or any other help will be thankful mates🙂 thanku❣️