God is nothing like us. Quran says this multiple times that there is none like God or none comparable to God. One should realize from this the transcendent nature and majesty of God, whose reality the meager intellects of man cannot fathom. Thus, the Prophet Muhammad PBUH said:
Contemplate on the creation of Allah but do not contemplate on Allah.
Based on the prophetic dictate above, we should steer clear from trying to grasp the reality of Allah. We should suffice by understanding that the human intellect is very limited in its reach and see our inability to fully understand Allah as being from our weakness and imperfection as humans. This weakness and imperfection is only reaffirmed when we look at created things around us: the sun, the moon, the stars, the mountains, the sky, and so forth, seeing thereby the greatness of Allah and His power.
This is exactly what you just did in your post. Your are amazed on the capability of human mind an dthe fact is each and every part of human is so complex and complicated that it can't come into existance by itself by random selection. God has given us our senses and intellegence to reflect on things around us and this will result into only one conclusion that we and everything around us has a creator. The complex nature of human shall also leads us to think that we must have been created for a purpose. I am sure you would have come to these conclusions.
Islamic view of free will is that humans have free will to commit good or evil, but God’s knowledge and power encompasses all that happens in this life. This means that we will be held accountable for our actions, since God, while knowing what the outcome will be, allows people to act on their own free will to choose good or evil.