You can play according to the plastic tone in the picture. Xiao Bai and Kaka can take turns to play. Personally, I think Harvey can play DMF (defensive midfield) in the middle circle, but I suggest you buy another DMF. Also, the average team in SB position in your defense can play left-back, but it doesn't mean he is the best candidate. Suggest buying another SB to personally recommend Thornton. Kathy and Buffon are actually similar, but Kathy is younger and more inclined to be young. Finally, I want to mention the position of Messi. Because Robben is good at SS, he can only put Messi in AMF. It all depends on his performance in the game.

These are all my own suggestions, please refer to them. I am also playing PES20 1 1 Masters League. If possible, we can communicate on QQ. thank you