Check the Nexus Mods or FIFAMasters forums. These communities vet their files to ensure they are safe.
If the .rar is only a few kilobytes or megabytes but claims to be a "full game" or "high-res face," it’s likely a virus. Download Josko Gvardiol rar
If you open the .rar and see a .exe or .scr file inside, delete it immediately. Check the Nexus Mods or FIFAMasters forums