Why Allah choose 12 month

I don't understand why God choose 12 month per year why not 53 10 9 because 12 is a special number we know with the qur'an that 1 month means one lunar cycle and there is exactly 12 lunar cycle EVERY year I don't understand since our hijri calendar doesn't care about solar year and also I don't understand why some people claimed that prophet was following a solar year in the early days of Islam I am not sure if this calendar is the right can you help me explaining why 12? maybe there is other reason