@Felix11sk If Opponent has players with 6 stars and special ability at the start of season then he buys tokens.
Look on opponents archievements and trophys tab, if he has lot of them, then he is active player for sure.
Take care of your team, don't think too much about opponents, you'll have time for every one.

Last season my team played against opponent that had lot of good players, but his squad completly lacked dm, am and wm.
He was forced to play 4-3-3 so i used 4-1-4-1 and crushed him 5-0 away in first match, 3-1 in second.
I had used many formations last season, played against strong teams and won cup, 3rd in CL and 2nd in liga.
Variety of good players for every position is key, then you will be able to prepare for every opponents position and counter it.