Refrigerator door seals, be it in your home or RV are mashed so many times over the years from people pushing the door close the they lose their sealing property because they don't quite reach. Before I spend money as an retired appliance technician and still repairing appliance as a hobby I would try heating the door seal with a blow dryer or heat gun on medium to low setting. You have to be careful not to overheat it as the seal could tear very easily when pulled.
Open the refrigerator door, gently apply heat to seal and lightly pull seal to make it stick out further. Or remove screws that hold the refrigerator in and slide the fridge out enough so you can see the seal against the fridge. Open the door slightly to the point you can see the magnet being attracted to the cabinet metal, but leave a gap. Heat to seal enough until you see the magnet pulling itself against the cabinet. Hold the door in that position until the seal cools a bit.
I can't stress enough not to overheat the seal to the point of melting or burning a hole in it.
A coating of silicon lubricant or petroleum jelly rubbed on the gasket and magnet portion will help to maintain the pliability and sealing capability.