From your question, it seems that you think that faith in God does not have evidence.
Faith in a Creator does have evidence, and it is found in the things that were made, which proves his existence. Faith is the assured expectation of things hoped for, and the evident demonstration of realities although not beheld.
People in the Bible are pictured as being able to trust the One who gives them counsel either directly or in writing. When their prayers are answered, the answers also bear witness to them that their faith is worth the effort.
There are a lot of things in the natural world that we cannot see, but we accept their existence because of the reactions that they produce. Things like gravity and the wind, and electricity. Indeed, one Hebrew word for spirit is the same as the word for wind. However, God's spirit is directed toward certain specific ends, while the wind is directed by the established physics in the natural world.
Here is other evidence:
1 Non-existence to existence - if something does not exist, and then suddenly exists, there has to be a cause for this change, one that shows itself to be able to effect that result. The universe has evidence of a beginning, and so everything in the universe, the matter, energy, forces, and the laws that they follow, and even time and space itself, had a beginning.
The singularity followed by the Big Bang are not causes that we can see, but some can only hypothesize that they happened anyway. We do not see this happening in our lives. Theoretical physics does not prove that something happened, only that, supposedly on paper, it could happen.
A Creator with the intelligence and power to cause existence from non-existence, and with a far-sighted reason to do it, makes far more logical sense.
2 The finely tuned laws that govern energy and matter - this observation is found in the precise relationships which, if they are different by very small degrees, can make our universe impossible. Even the order of the elements of matter can be placed in a chart that shows their detailed interrelationships. The discoverer Mendeleev even left spots in his first charts where undiscovered elements were later placed. This can be compared to a puzzle made of dozens of pieces which, if one piece is left out, will result in an incomplete picture so the puzzler knew to look for the pieces.
A well laid out plan with a specific end in mind would make this possible. Even the 13.8 billion years quoted in so many science books is not enough time to produce such a complicated plan without a mind. Even the laws of physics themselves that govern energy and matter must come from some kind of mind.
3 How to turn non-life into life - it is not so easy. Experiments show that substances can be assembled, but they break down before life is produced. Other experiments use altered life structures such as DNA to make new specimens, but not things that are not life.
4 How living things complement each other in symbiotic relationships - did these make them up? Also, the human brain is still the most complex computer on the planet, and even computers, that can do some things faster, cannot compare with its versatility. These are evidence of an all-encompassing purpose.
Archeologists who see bricks in order and tools and jars and streets under a mound of dirt, and they conclude that many years ago some intelligent human people constructed a town. Every house is constructed by someone. He that constructs all things is God.
Science is a structured inquiry into our existence. But knowledge of God's existence does not come only from science, but from the testimony of those who came before us, plus a humble, earnest, personal search for God, which is the only way to get a positive and definitive answer.