In RVs and houses outlets are wired the same. A wire containing a black, white and copper ground wire goes to the first outlet in the wall and is connected with screws or push in connectors. Then a wire goes from the other side of the outlet to the next one and so on in a daisy chain. If the wiring comes into the outlet and is connected properly but gets loose on the other side where it goes to the next outlet then your next outlet can't get power. Alternatively, the bad one may have a loose or broken wire coming into it.
Turn off the power, pull it out and look for a bad connection.
In many cases the last working outlet has the problem in the connection going to the next one.
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