Might be springtails that hop.
We need more information. Do they fly, hop or walk?
So in my room at night there are these little teeny black bugs (they kind of look like tadpoles) i think they are just gnats but why are there so many?!? They make like this squeaking squeal noise (im not really sure how to explain it) and i couldnt even begin to count how many there are. Why are there so many? And how (if possible) do i get rid of them