How can you claim it is "impossible" for God to exist ? The universe around is enough to have faith in a designer.
[Q 52:35-36] Were they created of nothing, or were they themselves the creators? Or did they create the heavens and the earth? Nay, they have no firm belief.
[Q 3:190] Verily, in the creation of the heavens and the earth and the alternation of the night and the day are signs for those of understanding..
[Q 27:86] Do they not see that We made the night for resting therein and the day giving sight? Verily, in that are signs for a people who believe.
[Q 80:24-32] Then let mankind look at his food, how We poured down water in torrents, then We broke open the earth, splitting it with sprouts, and caused to grow within it grain, and grapes and herbage, and olive and palm trees, and gardens of dense shrubbery, and fruit and grass as enjoyment for you and your grazing livestock.
[Q 30:21] And of His signs is that He created for you from yourselves mates that you may find tranquillity in them; and He placed between you affection and mercy. Indeed in that are signs for a people who give thought.
[Q 45:24] They say: There is nothing but our worldly life, and we live and die and nothing destroys us but time. They have no knowledge, but rather they only speculate.