I Feel... Confused O__o

Hmmmm I was just wondering about how Earth came to be & for some reason it just doesn’t add up. One minute Christians are saying that Earth was made by God & the next, scientists are saying it’s nature. I feel like….how was God created if he supposedly created everything?….Who chose him of all people to be the superior one? & Why did he create people in order for some to live life & may end up in Hell? Why does he put pain on his people just to test them? What if they’re not strong enough to endure all of life’s obstacles?….