Is this plant goin to die? Please help.

Okay so I have 4 1 month only plants and I have transplanted tem 2ce already and during the last transplant I buried the cotyledon about an inch under on one of them and that one is very weak and barley growing. Idk if that is why or what but the other have strong thick stems and the one that I buried those has a very thin weak stem. Am posting pics. The short one I the one that I buried and is weak. What's going on??

If I can understand your posting correctly, it seems that you did something wrong. Possibly the excessive transplanting or deeply burying the young plant? The blue pots are lovely.

Don't worry about it they bounce back just try not to over water n give the larger veging plants some food they look hungry n you might wanna put the light closer.

Everything living will die.

I doubt it will die. I don't doubt that you should have probably put all those plants in seperate containers. Ive never burried mine either, i dont even know if they will shoot roots out the stem like a tomato plant does...???

pretty sure you're not supposed to bury the cotyledon, and the plant on the blue pot looks stretchy. what kind of lights, soil mix are you using?