how to keep my microwaved food from being soggy?

i was searching for an answer and the closest i could find was someone asking about microwave meals, but this is a bit different than like frozen dinners so i figured i'd ask. when i heat up food in the microwave, like frozen burritos, hot pockets, or even warming up a leftover grilled cheese, there will be puddles of water that accumulate under the food. it's disgusting and makes me gag when i get to the wet parts. how do i avoid/prevent this? it wouldn't happen before, but now it just happens all the time, and i haven't changed how i cook these things.