Check the FM Scout Downloads or SortitoutSI .
If you tell me (e.g., FM24 , PES 2021 ) or league you are looking for, I can provide the exact installation path and the best site to find the most recent kits! Download File teamkits.rar
Since teamkits.rar is a generic filename, ensure you are downloading it from a reputable community source: Check the FM Scout Downloads or SortitoutSI
Open the archive and find the folder containing the .png kit files. Download File teamkits.rar
Move the kits into your sider\content\kit-server directory.