Ok so to start, the universe is a good proof. If you know a bit of logic and have a brain, you can easily deduce ,that this universe has a start, and before that start there was no universe. So what made that universe exist? The second is the law of cause and effect, you will trace the law and effect, you can trace all effects today to the start of the universe and the only possiblity is that it stops somewhere, because if it didn't then there would be no universe and that somewhere doesn't need a cause. So thats the logical conclusion 2.if you know a bit of biology , you will probably know that the dna is so complicated and precise and perfect, we can't even replicate a small part of it with all our factories and science. So it must be the result of supreme intelligence (information can only come from other information) ,thats the third. So now we know that there is a entity or being that caused the universe to exist and created us .

And the fact that we are created with a set of morals by instinct and have thought and conciousness (that science can't explain), its only fair to say that he did not leave us alone in this life.

Now comes the religion thing, there are multiple religions that claim the same:god did not leave us alone. And they come with books and signs to their people. so now from our standpoint and after those logical conclusions . We need to choose the religion which is true .and if you research a bit , you will find that all of those religions have contradictions and problems that no one steps in to clarify except islam. I say it has no contradictions. Atheists pull claims out of their ass and say islam is not true. But all of them were clarified on the internet and in books. So i suggest you research and think of yourself.

Death is not the end , so don't waste whats after for whats only so short.