The story doesn’t begin on page one!
As you walk past this window you catch a glimpse of … (what?).
Life didn’t begin because you happened to be passing. Life had already begun, and will continue after you’ve moved on.
When writing a story, open the window and invite your reader in. This is their page one, but to you, the author, page one thousand would be closer to the truth.
Deposit backstory as if taking vitamins, but don’t over do it because info dumping will slow the pace!