Is there any evidence that doesn’t only prove the Bible, but proves the existence of God? I know I shouldn’t, but sometimes I wonder if God is even real, and historical evidence would really help me.
God cannot be proved to exist.
God can be known, not by the sciences, but by being loved, in and through Christ. Reason by itself is woefully, ridiculously, insufficient for man to come to God. Unless God in His grace comes to us first, to guide our hearts and our feet, we will never so much as think of going to God, let alone do so. All the work is done by God - and a little of it, is done by us also, as God's "co-workers".
There is no historical evidence for God - historical evidence can show that various deities are worshipped, but it cannot
1) show that those deities are real beings
and
2) it cannot distinguish between them, and the True God. Historically, there is evidence of the cult of Apollo; and of the cult of JHWH - there is also historical evidence that the two deities were identified. But there is no historical for the real existence of either. If deities are real, historical and other scientific evidence cannot show that they, or either of them, are or is real. That is not what the sciences are for.
Historical evidence, like that of other sciences, is reductionist; it can provide evidence of the existence and deeds of deities & Saints - but not of their sanctity. That is far more true of the God Who is glorious in His Saints - the God Who transcends nature, cannot be reduced to it, or fitted into it.
An illustration: no sane person who knows what things are, would expect to find J K Rowling within the Harry Potter books. "J K Rowling is the author of the HP books", does not mean or imply that:
1. She is present in the binding, print, and other material parts of the books; tearing out a page, or all the pages, won't harm her in any way;
nor that
2. She can be found within the story told in the books;
nor that
3. She exists along aside the characters in the story, so that just as they encounter one another, she and they can encounter one another within the story - there is no manner in which she is one of her own characters.
4. All that said, there is a a genuine & real relation between her OTOH, and the story and the characters OTO. The characters exist within the story; it is the environment within which they live and move and have their being, and she is (under God), the creator and author of them, and of it. That feigned reality, and those characters, and all that they do, is "from" her; it is totally dependent on her. It does not however follow, that she can be discovered "in" that feigned world, as an entity within it. She is present in that world, that story, those characters, not in her own person, but by her working and her effects. In herself, she is totally inaccessible to the characters in that world and that story and those books as material items.
If a Muggle in that world were to say, "Show me this JKR of yours, and I will believe", the Muggle would be making the same type of mistake as many sceptics do in this-worldly reality. The difference is, that God is far more Real, than any mere human could be. God is too Real, too Good, too Living, to "fit into" the universe we inhabit: "Even though a total solar eclipse will effectively blot out all of the sun's light during totality, the powerful light from our closest star can still cause eye damage in a matter of seconds during the partial phases of the eclipse…". In comparison with God, the Eternal Uncreated Light before all material light, the Sun is less than nothing. To see God, one must be like God, united with God. God must be loved, to be seen and known; and seen and loved infinitely, to be known infinitely. But only an Infinite, Divine Person can do that. IOW, without the Son of God as our Mediator in all things, we cannot know the Father.