Sad looking plant vs other what am i doing wrong?

[sirbelgiumwafle]

So heres the simple breakdown ive been doing pretty much the exact same everything water temp swap each plant from the fan humidity is good but i did trim a little bit much my one plant looks so sad and lame and the other looks amazing and this is my first grow so idk what to do?
The first plant is the sad one and the second brighter plant is my good one

 

[bradr2]

It sounds like you're running into some common challenges for first-time growers—don’t stress! For the sad-looking plant, it could be reacting to the trimming if too much foliage was removed at once. Plants need their leaves to carry out photosynthesis, so heavy trimming can sometimes cause stress. It might be a good idea to give it some time to recover and minimize further changes to its environment for now.

 

[Stoneyluv]

is this second plant the same cultivar?

what food are you using?