What is god? How do we define god? Just because we can’t see it does that mean it does not exist?
If someone tells you they have a dog and yet they have no food and water bowls or hair anywhere in the house, no dog poo in the back yard and not so much of a foot print anywhere near or in the house, would you be much impressed by their claim that they have a dog?
If a thing makes no impression in this world, what would it much matter if there was a dog?
Atheism is true and correct because Bible God does not exist. "God is Love" 1John 4:8 But Bible God endorses slavery, polygamy, genocide, and the murder of Heretics and Homosexuals. Bible God treats women as 2nd class citizens, and he is prejudiced against the handicapped. God intends to burn Billions in Hell for all eternity. This is not love. "God is love" is contradicted by the above mentioned unloving actions. Therefore God does not exist and Atheism is true and correct
On the basic premise that we need some sort of evidence to believe in the existence of anything, then the answer to the question you pose is No. There is evidence that the earth is 4.5 billion years old, latest evidence dates earliest man at around 2.9 billion years and since earliest times he has been looking for evidence of a creator. In all that length of time no evidence has been found (or put another way, god has not revealed himself to man in any tangible way), then in all laws of probability I believe it’s a logical conclusion to arrive at, that he is merely a figment of man’s imagination.
Why are you asking a group that professes not to have a belief in a god if one exists? Why would they be able to define something that they don't believe exists? These questions seem silly in the context of this group. Why aren't you asking people who actually believe one exists?
Not being able to see something is not proof of its lack of existence. For example, we cannot see electricity, we cannot see oxygen, we cannot see radiation. Ah, but we can measure these things and test for them. We can prove they exist. We cannot prove god exists, so likely it does not. A lot of humans are too arrogant to say "I don't know" and must invent something to fill in the gaps.
If something can't be seen, touched tasted, smelled, heard, or confirmed on any level down to the microrcellular or even subatomic then for all intents and purposes, no, it does not exist. God, for example, meets all of that criteria.
God does not exist.
You've hit the nail on the head with "How do we define god?" Can't really answer whether God exists whilst the definition of God remains so vague. Spinoza offered a Pantheist definition where God simply equates to the material universe. Does the material universe exist? You'd have to be pretty far down the Cartesian rabbit hole to doubt that. I live my life as if Spinoza's God exists though I would typically choose different labels. On the other hand, I absolutely reject the amount of sophistry required to reconcile the Catholic view of God with observation and reason.