Islam is as fake as every other religion. But I wouldnt call it fake, its probably the wrong word, its more like folklore maybe.
You might get yourself into believing it if you really wish to, because the opposite cant be proven.
People believe all sorts of things. Religion is copium for a lot of people, thats why they hold onto it.
Especially if people are weak, it can help with a lot of things. Can help people deal with grief, can help people deal with the fear of death or non-existence. Can take responsability off people sometimes and so on.
Even your own existence requires belief, if you believe the working universe is purely physical that also requires beliefs not supported by science in many respects