New Guy, Control+R Dosen't work/Face Acts with a mind of its own

beginner in blender here, and i’ve been trying to make a realistic car using a tutorial. However, a face has been glitching, so I try to make an edge loop (Ctrl + R) but blender dosen’t see that particular face as an option. How do I fix this? (using mirror, Solidify and subdivision surface modifiers.)

Hello there!

You can create Edge loops only on quad faces, but this looks like an N-gon.
You can connect vertices across the face with with J, which creates an edge between two selected vertices and cuts the face
cut it with Knife tool.


Now it works, Thank you!

(By the way i’ve never been replied to this fast on any forum. I’m surprised, honestly. Thanks again)