The covid related renal failures I have seen were almost always* in patients that had renal issues before hand (acute on chronic). Skipping dialysis is NOT a good idea.

*We have had a few acute kidney dysfunction Covid patients. Usually it was patients with Rhabdo and Covid that we admitted to the hospital. Although it is possible for Covid to cause rhabdomyolysis the cases I have seen have been from some combination of muscle injury, dehydration, infection and substance abuse.