Take 2.
Why does the universe matter to you and is the universe everything?
I answer that in my way and that includes science is useful, but not the best way of understanding everything. The best way to me is a combination science, philosophy and religion.
Now I acknowledge that to you, your answer is different. But here is the problem.
You used a "we" and "truth". You don't speak for a "we" and you don't have the truth of everything. Nor do I. You have the truth for what works for you and what is better for you. But you can't speak with truth for a "we" and your "better" is subjective. So is my truth and my better. You didn't speak of the universe as such, you spoke of different ways of understanding everything and you then used your bias of how to frame a certain context: The universe as somehow different from that of other answers about everything.
That is where it ends. The universe is nothing everything if you answer objectively as how we describe what we humans are a part of and the other parts. It is a scientific framework for a part of everything. That is your bias. If you change your bias, the answer of better changes. Not that you are without bias and not that I am without bias. I just explain to you that we both have biases.
As for truth, truth might not be what you believe it is:
https://www.iep.utm.edu/cog-rel/
https://www.iep.utm.edu/cog-rel/#H3
As for science:
I know this and I can tell you how my culture influences how I see. You seem to take your culture as universal for all humans, hence "we".
So how you rate science and religion is cultural and so for me. I just know that it is so for both of us, and what is better for you, might not be better for me and in reverse.
Edit: PS
The many meanings of truth
Further edit: You use science to argue against religion. I understand science differently and doubt that you can use science for that.