Help!!! Something is Eating my Plant (Pics)

I am growing outdoor in coco and something is eating on the leaves looks like its eating the underside of the leave. It can’t be mites but I did spray insecticide for it and for thrips as well.

It just seems to be getting worse I have checked to see any pests but looks clean it's like whatever it is comes at night eats then disappears before sunrise.

What could this be?

I had a seedling that looked like that few first set of true leafs it's like it been eaten but I think it was deformed... But not that's white stuff mate under the leafs. If something eats it I think it will have a dead strip from where it's been munched with no brown dead lines .... I think not sure as I only come across that on my vegetables outdoor like ants and other tree munching buggers

No big deal ..a little chlorophyll imbalance but nothing to sweat about, coco does best indoors along with a small fan,
I say that,.. cause coco is a good method, but you really have to stay sharp, and any screw ups ..will attract bugs ,,like a lion to zebras

look to neem oil for future results https://www.rollitup.org/Journal/Entry/neem-oil.27514/