Hey, got some Problems i guess. Can someone Tell m...

First pic seems like it's overwatering, second seems like there's some windburn, third could be that there's not enough light hitting the lower leaves but it's probably some deficiency, I'm seeing yellow between veins, so could be magnesium+sulfur maybe some nitrogen or phosphorous too (and I've been chasing phosphorous deficiency a lot with light mix and biobizz nutes, I see some purple stems, so you should check that out too). Epson salts helps with that magnesium and sulfur, a teaspoon per gallon usually is the recommend dose. Knowing at what PH that you're watering would also help, some ranges lock out some nutrients. I find that biobizz nutes can lower the PH a lot. I also find that light mix soil makes everything way harder if you don't know how to detect what they need and several plants have different needs, it's really good for seedlings though.