I do take my kufr as my own doing after a long and hard attempt to reconcile two complete contradictions.
"Why did Allah create evil?" That's the problem of evil and it doesn't make sense either. If you create evil, then you are responsible for it. For example, if you leave a gun on the table and some child takes it and kills themselves with it, you are responsible. However, it is not the point of the thread.
Islam is trying to bring together two different points that are philosophically have been found to be illogical. Most people will claim that they feel free therefore they must be free but that doesn't work. Islam tries to bring together libertarian free will (not the same as libertarianism) and hard determinism (Qadr). Philosophically they are both incompatible. Life cannot be determined but free at the same time.
All the potential outcomes of person's life (and actions) are pre-determined by Allah and these outcomes can be infinite.
Multiple outcomes are possible from every single moment and Allah can see all of them.
Different motives drive each person to move in one or another of the million possible direction.
This decision to move in one direction or another isn't managed by the intellect alone, it is primarily managed by the person's inner will (Ruuh or soul).
The will is in bondage to god at a metaphysical level, but it is the key to unlocking infinite possibilities on earth.
Freedom of will is an illusion because it is nothing more than the
occasion for a competition between different desires/motives which are guided by the person's inner will (soul).
As schopenhauer states in his book (the world as will and idea) :
“Although man and animal are with equal necessity determined by their motives, man has, as the animal has not, a complete choice, which has often been regarded as a
freedom of the will in individual action, although it is
no more than the occasion for a fight to the death between several motives, the strongest of which then, of necessity,
determines the will. For this the motives must have assumed the form of abstract thoughts, because it is only by means of these that actual deliberation, i.e, a weighing of conflicting reasons for action, is possible.” p.g 193
As a result of his ability to deliberate “freedom of will has been attributed to him, in the belief that
his willing is a mere result of the operations of his intellect, without a
determined drive which might serve as its basis. In truth, however, the
motives work only on the basis and on the assumption of the determined drive, which in his case is a character”pg.194