Strawberry Cough - Fem - Summer 24

So the yellow leaves started to return towards the end of last week which was a bit annoying. I've doubled the amount of Nitrogen to try combat this. Decided to call it a day on the root booster as the root ball has now consumed the entire 40L pot. I use a plastic mulch sheet on the top of my soil to help the moisture retention (important when using fabric pots outdoors in mediterranean climate!) and the roots are growing out of the top of the soil. Yesterday I noticed some white patches on a few leaves that looked a bit like someone had splashed the plant with flecks of white paint. Upon looking on the underside of the leaves there were black dots. I removed them all and binned them as I wasn't sure what they were. Had a good look over the plant & couldn't find any more of them. Never seen this before so I examined them with my little microscope and the black dots didn't look like eggs or anything. Possibly insect poop. Ok, so a quick Google & I think I have Thrips...