What are these spots? I've tried every fix but nothing works.

High bro, Haha gotta love your name! The spots on your leaves are caused by calmag dificiency propably due overfeeding. You can flush the build up nutrition out of your soil, let the soil dry out after and continue your grow with less nutes. For flushing you need to slowly pour water onto the top of the soil, allowing it to drain freely from the bottom of the pot. Pour slowly, so the water doesn't overflow from the top of the pot. Use approximately four times the pot's volume in water to flush the soil. For example, use 1 gallon of water for a 1 quart pot. After the flushing you want the soil to dry out (almost) completely. After this you can continue watering like you are used to and start giving a small dose of nutes again. Happy Growing! 😋

What @m0use said... !!

I would also check the night time temp/RH as day time is borderline stress point, if night is too, then it can be the start of bigger problems

I'm going to say it's from the leaves drooping at night and touching each other while they transpire because the leaves aren't moving

@grower_not_shower looks like powdery mildew on those leaves and the spotting could be from misting the leaves or when your feeding spilling a few drops on the leaves https://www.almanac.com/pest/powdery-mildew#:~:text=Effective%20organic%20fungicides%20for%20treating,effective%20in%20treating%20powdery%20mildew.