If the universe is infinite, if you look hard enough you will find an exact copy of me writing this exact message on this website and all of you are there too. Since if you search enough in an infinite universe you will find every possible thing.
Except it isn’t really infinite in the same sense. It’s just expanding infinitely. Which means that realistically, there is the same amount of matter but it’s just all getting farther apart.
Unless you believe in the multi-verse theory, then what you said is completely valid.