Common Misconceptions: Who's the doer?

Q. "One who can see that all activities are performed by the body, which is created of material nature, and sees that the self does nothing, actually sees". Why is it said that the self does nothing and that the body is the doer?

The soul is being carried on the machine (yantra) of prakrti, or material energy, like a chariot carries a passenger. The body is performing activities, or prakrti is the performer, not the soul.

Q. As it said in Bhagawad geeta Ch 3 Text 27 everything is under the control of three modes of nature or the Supreme Lord we under the false ego think that we are the doers. not even a blade of grass move without His will. Bg. Ch 18 Text 14 also says in 5 things are require for any action to be done and in that the doer is one of them. my question is that than how the free will works? if any thing good or bad happens how is the doer responsible for that particuler act since everything is controlled by Krsna. second question is that do we get our modes according to our previous karma and that mode forces us to do particular kind of karma.

Q. 1. I'm wondering how individual free will factors into the verses and purports describing the species of demoniac life. Specifically BG 16.19 - 20.

Srila Prabhupada's purport states:
"In this verse it is clearly indicated that the placing of a Particular individual soul in a particular body is the prerogative of the supreme will."

"As for the demoniac, it is clearly said here that they are perpetually put into the wombs of demons, and thus they continue to be envious, the lowest of mankind."

Q. I was reading the Bhagavad Gita and I am not able to understand something which I feel like there is a contradiction. Please help me dispel my doubt.

Q. 1.  Lord Krishna is explaining in 10th chapter that he is the creator of everything. I have serious doubts of who is the doer.

BG 10.2: Intelligence, knowledge, freedom from doubt and delusion, forgiveness, truthfulness, control of the senses, control of the mind, happiness and distress, birth, death, fear, fearlessness, nonviolence, equanimity, satisfaction, austerity, charity, fame and infamy — all these various qualities of living beings are created by Me alone.

Q. In Bhagavad-Gita 2.47, Lord Krishna says, "You have the right to perform your prescribed duty, but you are not entitled to the fruits of action. Never consider yourself the cause of the results of your activities, and never be attached to not doing your duty."

Question a) In this world activities are performed with the results in mind and in fact the results are the motivation for one to do work. How does one perform his
activities in this world without expectation of fruits / results?

Q. In various writings, we are taught that we are not the doer. If we are not the doer, then why are we liable for the results of our actions (good or bad) i.e. karma?

We are not the doer, but when we identify ourselves falsely as the doer, by the laws of nature we become responsible for our actions.