Hi Nichos @nichosp ,
You have Individual on and it looks like your ‘overshooting’.
Make sure your Scale is Applied (in Object Mode: CTRL+A > Apply > Scale) and your Normals are consistent (in Edit Mode: A, SHIFT+N). Also make sure that you have the correct Faces Selected (and not more!) and then try Insetting again, carefully moving your mouse (hold SHIFT to move slower if that helps).
