First, im sorry on the behalf of my fellow brothers and sisters. The hostility you have received is very unbecoming and the opposite of what we strive to be.
Second, we must compare scripture with scripture to determine the truth. The verses that you showed, actually works against your point. They have nothing to do with freewill, but everything to do with leaning away from the understanding of man.
This is a big point because throughout the bible it is iterates that God knows all so his plan should be followed, but the biggest question for free will, whats the purpose of the bible? If all were predetermined and no free will there Would be no commandments because we would follow the divine flow. There would be no need.
Now as the anger boils your veins, be still and listen. The Lord is not like us, he doesn't think like us. He is infinite and can be inside and outside time itself. He had all selected before the foundation of the world. He knew every decision every person would make and formed everything around it. This is not to say that he controlled us, but not being limited by time he could see all before existence as existence existed as well as those whom suffer eternal condemption.
With being able to manipulate anything, even when things don't go way (human free will) he can alter other things to make his will work flawlessly, however you can see the effects this has. God still persuades us to follow him and will intercede. The death of a loved one, financial ruin, afflictions. These can alter our views.
He created man to glorify him and none else but wanted Man to do so willingly. Hence human free will.