There is literally nothing that can be done to convince Atheists of a God. I don't know why people are still trying
That depends on definitions.
For example, some people identify God and the universe. Since I believe in the universe, I believe in God by their definition.
Some people define God as the 'creator of the universe'. I am not convinced that causality applies to the universe as whole, so I would need to have some evidence that the universe is something that *can* be created. And, I would need some idea of what is meant by 'the universe'. But, with appropriate definitions, the concept isn't one that can be excluded for logical reasons. So I would then need actual evidence that some conscious being created the universe.
But, for example, if a race of higher dimensional beings learned how to create universes and ours is one of those that was a high school project and is 'now' forgotten, is that enough to believe those beings are 'Gods'? I suspect many theists would say no. Which shows that being a 'creator of the universe' is not enough.
On the other hand, some define God to be the creator of life on Earth. That is a less difficult thing than showing the whole universe was created, but I would still need some specific evidence for life arising by a conscious creation as opposed to by natural means.
Many people have other definitions of God. For example 'an moved mover' or 'first cause' or something along these lines. This is distinct from the notion of a creator. But, again, I would need to have reason to think there is *only one* uncaused cause (as opposed to many) or that everything really is caused by a single thing (as opposed to many sources of causality). A separate, but important aspect of this is determining if the first cause (if it exists) is conscious in some way. That is another thing that may need to be established.
Others define 'God' to be some sort of 'higher consciousness'. For that definition, I would need some evidence that such a consciousness exists as opposed to being simply an illusion brought on by meditation. Given my understanding of the universe, consciousness is limited to certain biological organisms. That would have to be shown to be wrong before I could accept this concept of God.