i know its bad please give advice for my next attempt

BEST IS TO HAVE A DIARY FOR ADVICE!!! ALL I CAN SAY IS GOING BY DA PICTURES IS DAT!!! FOR BEING A VERY NEW GROWER IT WAS WAY BETTER THEN PenguPoop AND Selkot NEW GROWS!!!! BEFORE YOU KNOW IT YOU WILL BE ANSWERING GROW QUESTIONS AND GIVING AAA+ ADVICE!!!!

hey 👋 For an accurate diagnosis, more information would have helped, but we can already draw a few conclusions: The leaves turning purple (almost black!) may be due to excessive cold, especially at night, probably below 15°C The color and deterioration of the foliage also indicate a phosphorus or magnesium lockout, caused not only by low temperature but also by the pH of your substrate The plastic pot is a bad idea, especially if there are no holes at the bottom ; your roots are suffocating and blocked I also think your lighting is too weak or too far away Finally, if you performed LST while the plant was already weakened, that likely worsened its stress Overall, it’s not necessarily a lost cause ; you could try to recover it by checking the soil and water pH, adding drainage holes to your pot, raising the temperature, etc. But to be honest, you’ll probably be disappointed with the yield, both in potency and in weight… A fresh start on solid foundations would be the wiser choice. Keep growing 👍

Without knowing what you did, its hard to tell what you did wrong.. A Diary would be helpful or at least more info about what you did