but it’s pretty unlikely for the same one to form again.

But it already formed once, why is it unlikely it would happen again?

Its more if you consider infinitie, you get the heat death of the universe then persumably a ‘reset’ of conditions with another big bang, repeat on an infinite timeline and eventually the same conditions that make you repeat. A materialist look on this would consider this ‘copy’ of you the same if everything that happened prior to you becoming you happened again.