just be patient buy a couple of youngsters for 1 or 2 tokens no more

or you can work to lvl nine and then tank that season this way you can make tokens and money from matches

and train your youngsters

just keep the rule spend no more then 2 tokens for a player and be patient and make friends for friendly matches to earn the boosters

and giving (4x1 booster each day) and to be patient you can build a really good team

this is what i did just be patient starting with older players and buying youngsters to get a good mix

Players at 29 i sell