what's the spanish for this sentence?

Question

"i'm not as good as i think, but i'm not as bad as you do"

Answer 1

The last part of your sentence is confusing, "but I'm not as bad as you do". So, it's a little difficult to know exactly what you mean.
I'm not as good as I think = No soy tan buena como pienso (que soy)"
but I'm not as bad as you do= pero no soy tan malo como tú haces.
but I'm not as bad as you are= pero no soy tan malo como tú.

Answer 2

no soy tan malo o mala como pienso ,pero tampoco soy tan malo o mala como tu eres