You should probably not spend much money, when you don't even know how to properly spend the ressources you would get from of it. This game is quite deep in terms of team management, the opponents you can draw and many other factors. 80$ spent the wrong way, can absolutely win you nothing here.

First of all, the season will end on Saturday and every player of yours will lose 20%, as long as you finish top 8, so spending so many token on the top scorer player for example wouldn't be the best idea at this point.

If you want to play the game more seriously, just read into some topics in the tutorial and guides section of the forum first, and then plan your next steps.