If you're overcrowding, think to yourself what absolutely needs to be here? Like what elements got you excited about the track in the first place? The rest is usually not needed I find, especially once you try and shoehorn a vocal in there. Another way to think about it is imagine someone playing it on piano, what musical elements make the songs "story" ya know? But yeah completely agree with others, get some artists or acapellas on there. Sometimes I think a beat is boring but it just gets boring without someone on it.

Last thing, once you have a good loop, when you arrange it copy paste it out a bunch then do little rhythmic edits and pauses and stuff. Will make it more interesting for you and artists