Frigidaire Refrigerator Door Sagging

Good afternoon-
My refrigerator has been having trouble keeping stuff cold. Food in the front (milk, etc) has been spoiling way before its date. I had someone come out to look at it today. They told me the lower door bracket/hinge is bent, so it’s causing the door to sag and not seal. ($95 diagnostic fee). They want $339.66 to repair it (includes parts and labor). If I go that route they’d apply the $95 I already spent to the price.

I’d rather try to fix it myself. I’m mechanically inclined. My problem is I don’t know what parts I’d need. Anyone here able to point me in the right direction?

Here are your parts
Parts for Frigidaire FRT21HS8KS3 Refrigerator - AppliancePartsPros.com

You will have to check what parts you need from the Door and Cabinet Parts sections.