Hey there Marzadz, without more information, it's hard to say but basically but basically you have root and nutrient problems. Root problems you can see from the downward pointing tips, probably the plant is struggling down there from overwatering, this you can see from the puffy space between the veins of the leafs. There's probably also too much N in your feed , you can see this from the "too dark" "too green" aspect of the leafs and the nutrient burn symptoms on the tips of the leafs. Try to cut down the N first of all. In soil you should be watering with plain water twice then once with feed, repeat this process... and it should take around 10 days for a water, water, feed cycle. To fix the root zone the best thing you can do is add humic acid. Usually it will fix everything perfectly quite quickly. Hope this helps! 🚀