Download a PS4 option file and extract archive.

Copy WEPES folder and paste in /Documents/Konami/Pro Evolution Soccer 2018 folder.
Open game, go to EDIT -> Data Management -> Import/Export -> Import Team > Select All Files.
Check "Overwriting image files of the same name" and click OK.
Wait until "Finished importing data." -> click OK.
Next, again go to EDIT -> Data Management -> Import/Export -> Import Team -> Import Competition -> Select All Files.
Check "Overwriting image files of the same name" and OK.
Go back "Finish editing and return to Top Menu?" and click YES.
Edited Data Saving. Please do not turn off your system!