i would like to start off with my diseases. a. The leaves have lost green color b. Some leaves have been eaten c. and i have spider mites. d. i live in a humid climeate and experience some root rot(i think) and is it possible for a low-grade seed to produce kind herb. or do you need the genetics?
From the sound of it I would start again. You could try a bug spray and a weak solution of fertiliser first.
You can grow pot that is better than the bud you got the seed from, but you're not going to grow some super dank shit or anything. Try the grow section.