Sounds like it’s time to replace your door gasket.
Here’s a video on doing it:
https://www.repairclinic.com/RepairHelp/How-To-Fix-A-Refrigerator/64-5-620806-/New/Whirlpool-Refrigerator-Runs-Constantly-gs2shaxls03
Here’s the gaskets:
https://www.repairclinic.com/RepairHelp/How-To-Fix-A-Refrigerator/64-5-620806-/New/Whirlpool-Refrigerator-Runs-Constantly-gs2shaxls03