If you receive no replies here you might post on other RV forums in their Technology section. Sounds like you want an all in one type player. Can you cast your movies directly from phone to TV as I do and I also cast directly from laptop to TV with and without Google dongle. I have had good luck with Sony and Samsung stand alone players that are only DVD players and not multi functional.
You might try cleaning the laser reader/sensor with caned air for electronics and glass cleaning wipes like those for reading glasses. It might work.
I suspect my comment will bring you your needed replies.