Even your definition's doesn't rule out having free will and determinism at the same time. That is a silly argument.

Basically you are saying that a person makes a choice because they are the person they are. Thus since they are making a choice based on their personality they were predetermined to make that choice. Thus free will doesn't exist because things like your memories and personality are the controlling factor.

That doesn't make any sense at all though. If your memories and personality are the controlling factors, then you do indeed have free will. If you, the body that makes up you, is the causing factor that determines what you are doing, then you are the determining factor.

So free will and determinism can exist at the same time. You act like your body doesn't exist within the world or something. Because your body exist and because you got a brain everything you do is determined by your body and your brain, thus determinism can always be argued as existing. However, at the same time since it is your body and your brain you are actually controlling your own choices, thus you have free will.
free and independent choice
If you are making your own choices you have free will, if your choices are decided by your brain then your actions were determined by you having a brain, thus both exist at once.

voluntary decision
If you decide to do something voluntary you can, you have free will. If you were born however, your birth influenced your life, so determinism exist at the same time.

the doctrine that the conduct of human beings expresses personal choice and is not simply determined by physical or divine forces

When they say this they are not referring to the human itself. The human can make personal choices, without being determined by outside physical and divine forces.