Sure your rinse aid dispenser is filled and at an appropriate setting? Modern dishwashers depend heavily on rinse aid, which is ultimately a surfactant to prevent surface tension from making water cling to your dishes - the dry boost setting can help but it’s not going to get pools of water out of cups with convex bottoms and such.

Could not be getting hot enough, the heating element and thermistor go bad fairly often. Vents, drain pumps, all go bad so often it's pretty crazy.

As mentioned below def use rinse aid, but I've also seen where people use too much rinse aid and it clogs the spray arms, etc.

You can google your model number and see the steps to enter diagnostics, as well as what the different codes mean.