With your questions, though not worded clearly, I guess you may wish to have a look at the following link to find a suitable formation for your next opponent. In general, your players could have more positions, say ST/AMC, so you can adjust it during matches to maximise their positional effect.

https://www.top11pro.com/2017/06/cou...ality-and.html

The team average in attack includes players such as ST, AML, AMC & AMR. Midfield includes ML, MC, MR & DMC. The rest are counted as defenders. Those figures are generally too vague to represent much, as most managers would need to counter the opponent’s formation and tactics specifically.