There are many verses in the Quran proving freedom of human. Some of them are as followings:
That is the Day, the truth, so whosoever wills takes a way to his
Indeed, We have guided him to the path, he is either grateful or
Say: 'This is the truth from your Lord. Let whosoever will, believe,
and whosoever will, disbelieve it' For the harmdoers, We have prepared
a Fire, the pavilion of which encompasses them. When they cry out for
relief, they shall be showered with water as hot as molten copper,
which will scald their faces; how evil a drink, and how evil a
More verses can be found here
First we use our freedom and select a way then God support us by providing us needed things like air, food, water, power,...
When God says he guide whom he will it means Allah guides who firstly himself wanted to be guided then Allah guides him.
Whoever hopes for the tillage of the Everlasting Life, We will
increase his tillage; and whoever hopes for the tillage of this world,
We give him some of it, but in the Everlasting Life he shall have no