Yeah, it does take some time to cool these things down. The fan in the fridge helps loads.
If your fridge has 2 electric heating elements one may have failed or if it has one it may not be working at full efficiency. In general tho, gas works better than electric.
You can find several diagnostic vids on YouTube that may help. Amazon for an interior fan.
IMHO there’s not much rocket science in these RV fridges and unless the refrigerant leaks out or the unit is seriously damaged they’re repairable.
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks