While I am positive multiverse theory is bullshit to grift grant money I must also point out the logical fallacy in your argument. You ignore all the choices made across the entire universe, known+unknown, since the dawn of time. Please note we have no idea when time started or how large the universe really is. In reality both are most likely infinite. This in and of itself gives you an infinite number of "choices" that span infinite time and infinite space. Your argument is made from a flawed anthropocentric view point.
In reality we run into the issue that the universe CAN NOT manifest, collapse the wave function, unless it is observed! So we must conclude that since the very first moment the universe has ALWAYS had an observer who in turn must be able to make choices. Assuming humans are anything but the "flavor of the week" as far as consciousness goes is silly. The universe exists because someone(something) decided to observe it, since then decisions have been made and each new branch would produce an exponentially growing branch of possible outcomes. We also have no idea when "time ends".....it doesn't....so we have a future of infinite choices ahead of us as well. Not to beat a dead horse but it's likely we have made an infinite number of choices before the universe manifest as well. Because we must have made a choice to think about observing the universe.
Please note we can never run out of choices, or "do all the choices" as space and time are infinite. So you haven't done any of the previous actions/choices in the part of space+time you've yet to discover and there is always new space+time to discover.
Which came first, the chicken or the egg? They both have always existed, simple as.