Seedling isn't looking good

This is how my wwa started out and after a while it got better but has returned to this start sadly, it sounds like your trying alot of stuff with your nutes cut the nutes entirely for a week and maybe even do a small flush and see how the plant reacts if it gets better it was over nutted for sure if it doesnt it may need more but in soil at the seedling stage that doesnt seem likely. Happy growing mate