No,we already know that angels are made up of light and jinns are made up of fire.
The word 'everything' is according to the context of that verse. In that verse Arabic word for 'everything' used is 'kulla'.
Suppose you little brother is eating chips and you asked that you wanted to eat some.
Then he said I ate everything and nothing is left.
I start with quoting a statement by Musa ibn Jaffar, a descendant of Prophet Muhammad (pbuh) who is considered a scholarly and spiritual authority by Shia Muslims, recorded in a famous theology hadith book, named at-Tawheed as-Saduq:
أنّه قال: إنّ الله تبارك و تعالي كان لم يزلْ بلا زمانٍ و لا مكان و هو
الآنَ كما كان لا يَخلو منه مكانٌ و لا يَشغل به مكان ...
There are a lot of assumptions you're making there, no offence meant.
Now, Allah is indeed omniscient. As for benevolence, we say He is the Most Merciful (not All Merciful). This means, more or less, Most Merciful out of all who show Mercy. No man should presume to restrict Him to complete and full ercy, and complete and full forgiveness all the time for ...