If the hot side works in all the fixtures, that points to an issue in the cold side, probably before it tees off from one fixture to the others.
I doubt debris has clogged all the cold sides of all the fixtures, but you need to rule them out one by one. Turn off the water pump, or shut off the city water. Then slowly loosen the fitting at the toilet. If you get no,water pressure then odds are the problem is further upstream. If you have water pressure then the issu is in the flush valve. Same procedure for each fixture.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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