Not really, space is so huge we are so unlikely to get close enough to anything

I had similar anxiety problems for this reason, nowdays this is probably gonna hit you as silly proposal, but I cope with most of it becoming somewhat religious. I just choose a version (or many) of the universe where that is not happening and people do actually have free will.

Not each time, just eventually. Whatever the config of all energy/mass on the bigbang before it explodes creates a cetain universe and eventually some cycle forms and is repeated, making time circular.

I would had bet on Alex as first without a second doubt

I was going to say chances are 100 because Alpha Centauri is not the closest star. But your answer is a lot more on point