ahahaha idk what to tell u anon, even professional and expert artists still go thru the same thing unfortunately,,
uhhhh that sounds a lot like art block? in my head there's two types: you have ideas but ur tired and unmotivated, or you wanna draw and have the motivation but ur brain is blanking out and u have no ideas
if its the first one: what i do is that i either take a break from drawing and let my brain refresh (NAPPSSSSS), or i explore other mediums of art and experiment (music, sculpting, traditional realistic still life painting, reading books, etc.)
if it's the second one: maybe listen to ur fave music!!! that helps a lot in letting ur creative juices running. try music from movies (soundtracks) that have a lot of different moods? it really helps in creative visual images in ur head, based on my experience.
u could also try creating to do lists during days where u suddenly have random drawing ideas!! or maybe those drawing prompt memes on tumblr, like those different emotions or different color palettes!