I made a video talking about this:
https://www.youtube.com/watch?v=novfdZ5wzV8
I can't watch your video right now, but your arguments sound similar to the idea of us being in a simulation created by a super-advanced intelligence. Or even a simulation, within a simulation within a simulation... etc.
One issue with that idea (and yours) is that technology won't necessarily keep advancing at the same speed, and there's nothing to really say for sure whether such things could be possible.
As for Universes coming into existence randomly, well there is a lot of evidence for the Big Bang, but no-one really knows why, or how it happened. It could have been random, or it could have been created by some super beings - we just don't know. Similarly, we don't know what's beyond the observable universe.
Regarding the chances of us "being in the first Universe", well we don't know those either. You say they're incredibly slim, but we don't have any other data points (other universes) to study and find the probability. We could be in the first universe, we could be in one of a number of universes, even an infinite number.
One thing we do know, is that the universe, and space itself, is expanding at an accelerated rate. So it would seem that our current universe will probably die a heat death. What happens after that, again no-one knows
I'll watch your video when I get a chance.
Pure random doesn't even make sense.
There is a lot of visible cause and effect that we use daily. In fact, science shows us that cause and effect is the basic mode of operation in our whole universe - as far as we understand.
You're delving into extremely deep philosophical questions here, the answers aren't as clear as you make out. No-one really knows for sure. While on the macro level, the universe seems to be deterministic, things get stranger when we observe things on a smaller scale.
For example a couple of things that do appear totally random are:
- Radioactive decay
- The collapse of the wavefunction in quantum mechanics
But we have no way of knowing whether they are truly random, or whether there are hidden variables that we haven't discovered yet, making them deterministic. We have similar problems with any test for randomness - if there are unknown variables, then how can we possibly incorporate them into our randomness test?
Not to mention a truly, 100% deterministic universe has compatibility issues with "Free Will", which opens another can of worms...