Put the fridge on the highest setting.
Freezers like to be full. I have ice trays, and rectangle ice bucket in mine. As space becomes available I freeze water in small jugs. to keep it full.
Refrigerators need room for air circulation, the opposite of freezers.
Plan ahead. Open fridge grab what you want and slam it shut. Put things back in all together, not one at a time.
Push firmly when closing the door. Your seal might need a good thorough cleaning with vinegar, then wipe down dry. Microfiber cloths remove the most gunk.
I put an outside solar roof fan on my refrigerator.
https://www.amazon.com/s/ref=as_li_ss_tl?url=search-alias=aps&field-keywords=solar+refrigerator+vent&sprefix=solar+refrig,aps,166&crid=OY62RGVQT1YZ&rh=i:aps,k:solar+refrigerator+vent
I like that smart rv gadget. Kind of pricey, but seems like a sound plan. I am putting it on my wishful list. ;D