Broad mites ?

Over watering, maybe? You’re in a bucket, does your bucket have holes drilled in it? How does your medium look? Wet? Dry? Is your pot light when u pick it up? Have u added anything to your regimen recently? Are you looking at your plant right before lights off? Soooo many variables, let’s start with those questions there first

Looks like mite damage on the leaves but the bent over stem looks like a drop in humidity. Something environmental

Does look like you could have pests damage there, time to break out the scope. Some pest can be insanely small so rather than pics from a scope I prefer video, movement can be easier to spot. If a plant has a quick downturn it's usually a root zone issue.