problem with plant

Hello, please help me, I faced this problem for the first time.

I have 2 ladys with different issues. im not sure what they are, if what is going on is something or nothing. One has something going on with it's leaf and the other the stem looks strange. If anyone knows what they are and if they are a problem and if so, what to do your help would be...

Good day, tell me about the plant a couple of days ago began to appear spots on the leaves, I think it is going to die, I do not know what to do. 😭 Box 150x150 Light - lumatek ZEUS 1000W Xtreme PPFD CO2. The box is not ventilated only air + air conditioner, CO2 controller - 1500ppm. growing...

aku s Is my plant normal and okay? Because I see there is a little yellow color on the contyledon leaves.