I don't pay attention to PPMs unless they are bad ones. For example - shoots from long distance is a bad one to have because that player will waste possessions on low percentage longshots. Nope the BEST WAY to scout for players is a process.
1. Hire the best scouts possible, my head of scouting has scout potential and scout ability at 20.
2. Check your CURRENT roster and identify your weakenesses and your strengths.
3. When you have a STUD footballer, use the find comparable players options. Then scout all the players that this process finds. If you have an promising footballer you think will do well, do the same. Now, find all the 3.5 star potential and up footballers that your scout has identified.
4. Find out how much they cost and if they fit your budget. You can 'make enquiry' to the player's club or just make an offer at the base value, and see what response you get in return.
5. Now when choosing between prospects. Bring up their scouting report, then bring up the second player's scouting report. Then do 'compare player' and bring up the previous player for a side by side comparison. Now you can see the stats and if this player will be better or worse than the other player.
6. Also account for age, if the player is a couple years younger, ex. 21 instead of 23, he has more room to grow. So a couple points difference here and there is no big deal for a youngster. 3-5 points is a huge deal though!
7. Further fine-tune your comparison, by comparing stats according to the role you want the player to play. For example, Midfielder-> Attacking Midfielder. Then you can see what attributes are relevant for the role. Or another example, Defender-> Central Defender. Etc.
8.What I like to do is compare prospects to my established stars on my club and see if that player has the potential to be as good or even better. For example, I needed to replace Lucas Leiva a few years down the road, I found all comparable players, then I scouted them all. Then I read the reports of those players with potential 3.5 stars and up. I ended up buying Lucas Romero.
Good luck!