The simple answer is no, the owner offered to sell the house to you at a specific price when they advertised it, you offered to buy the house at a specific, probably slightly lower amount and they accepted your offer. That's it, negotiations are finished. Keep in mind also that the purpose of the home inspection is to give you a sense of the physical condition of the home, not ammunition to renegotiate the deal. Yes, if something dangerous is brought to light, or a health hazard is revealed you can ask for a concession but otherwise the home inspection merely says, "this is the condition of the house, do you still want it?"
Why do you want to lower your offer? You don't say here and it's hard to answer the question without knowing your reason.
So many times buyers think that because their offer was accepted, it was too high, Sellers think that if they get an offer too soon they listed too low. Neither is correct, generally. Finding a buyer quickly, or getting your offer accepted, means you have priced the home correctly, both buyer and seller have hit on the magic number.