hello everyone i m new here

i am level 10 but i have problems with this game

i buy really expansive players so that they progress really fast and play good usually but not all the time...

so i just bout this player dmc 36.5m 18 years old level 69 probebly one of the best you can buy in my league

progress like crazy but plays like *&^$*&^it
i mean play so bad rating 6,5,4 for now...
this so stuped and it wasnt aganst hard teams

whats up with that? can someone tell me a way to make him play better?

or i have to let him go such a shame top eleven should give a Compensation just for that...

its not the first player it happend with i am lost...

thanks in advence everyone...