It isn't JUST that God knows what you are going to choose to eat for breakfast tomorrow. He isn't JUST an observer. If he was, then what you say is true. But the illogic of it comes when you consider that he created the universe exactly as he did, already knowing what choices the people make in it. No matter what universe he creates, he is making every decision, for every person, when he chooses exactly which universe to create. We cannot make a choice contrary to what he created this universe to do. Ergo, no free will.
That is incorrect. I am not sure what teaching you are listening to.
If what you say is true then there would be no need for a savior. Just start with Genesis. God showed the animals to Adam to see what he would name them. He told Adam and Eve not to eat from the tree. They both could have chosen not to eat.
Lets take that out then. They have kids, and their kids have kids....and someone, somewhere along the line would have chosen to eat and we are right back to the same outcome. Only Genesis would have been slightly different.