It's ultimately an endeavor of finding testable descriptions of the world in the face of being fallible. It's not about the "why". It's about "how" the world is. No faith required. "Why" the world is is a philosophical question and perhaps a religious one. But that has nothing to do with testable theories.
Any scientific theory gains credibility by providing ways to test it. Each such experiment that fails to disprove the theory increases confidence in the theory's validity. There is no faith required for any of that and no god either. If you can predict that conditions A and B lead to C happening, and I can try it and see that indeed C is happening, then you have science going on, without any faith.
Scientists only do safe experiments that will 100% verify the findings they are paid to attain.
Nobody will do peers review of whatever study unless its controversial- in which case they will come out of the woodwork to "discover" how correct/not THAT wrong their peers were/are still.
It is nonsense that we consider what comes from such a system to be "knowledge" - Modern science is many things, faithless science validating experimental theory -> that is not a real thing.
You might be missing the point of science.
It's ultimately an endeavor of finding testable descriptions of the world in the face of being fallible. It's not about the "why". It's about "how" the world is. No faith required. "Why" the world is is a philosophical question and perhaps a religious one. But that has nothing to do with testable theories.
Any scientific theory gains credibility by providing ways to test it. Each such experiment that fails to disprove the theory increases confidence in the theory's validity. There is no faith required for any of that and no god either. If you can predict that conditions A and B lead to C happening, and I can try it and see that indeed C is happening, then you have science going on, without any faith.