Who is Allah and why did he create us?

Allah is known as god. Most Muslims believe that there is no god but Allah and Prophet Muhammad ﷺ is Allah's messenger and sevant. Allah is the one who created the Quran and helped the knowledge of Muslims and gave the job to have faith in him. Allah has created the universe and he is taking care of it without tirdness or loosing control. In the verse (Ayatul kursi), Allah says "Allah: there is no god but him, the ever living, the sustainer, neither drowsiness nor sleep overtakes him, all that is in the heavens and in the earth belongs to him, who is there that can intercede in his presence except by his permission, he knows what is in front of them and what is behind them, but they do not comprehend any of his knowledge except what he wills, his chair extends over the heavens and the Earth, looking after them does not tire him, he is the most high and the most great."

ٱللَّهُ لَآ إِلَـٰهَ إِلَّا هُوَ ٱلْحَىُّ ٱلْقَيُّومُ ۚ لَا تَأْخُذُهُۥ سِنَةٌۭ وَلَا نَوْمٌۭ ۚ لَّهُۥ مَا فِى ٱلسَّمَـٰوَٰتِ وَمَا فِى ٱلْأَرْضِ ۗ مَن ذَا ٱلَّذِى يَشْفَعُ عِندَهُۥٓ إِلَّا بِإِذْنِهِۦ ۚ يَعْلَمُ مَا بَيْنَ أَيْدِيهِمْ وَمَا خَلْفَهُمْ ۖ وَلَا يُحِيطُونَ بِشَىْءٍۢ مِّنْ عِلْمِهِۦٓ إِلَّا بِمَا شَآءَ ۚ وَسِعَ كُرْسِيُّهُ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضَ ۖ وَلَا يَـُٔودُهُۥ حِفْظُهُمَا ۚ وَهُوَ ٱلْعَلِىُّ ٱلْعَظِيمُ ٢٥٥