Don't buy now, sell early next season, buy mid next season. Usually you end up with same quality and placed finished team as you in the new league. Unless you on a ****ty server and its full of bots. CL is same level and quality with 2-4 scout teams, cups same quality teams regardless of level.
Make the best with what you have, if you have basic knowledge of football and have played similar games before you'll be fine.
Go beat them token-buyers cheaters.