I'm also curious how you think we could have rolled it out better to have avoided those things.
This interaction? Honestly much much harder to list the positives.
I think much more regulation much much earlier. Cypto-currency should have been shut down immediately never allowed to grow. Same with Uber and AirBnB. Social media companies should have been banned from during algorithmic feeds and been required to moderate content much better.
Well while I appreciate that, I'd urge you to dig a little deeper; I'm sure you can think of many things. The Internet has enabled creativity, the sharing of knowledge, scientific advancement, and international cooperation & communication (I'm speaking mainly between citizens) on scales unimaginable a few short decades ago, to name just a few things!
Certainly, there are issues that comes with it - and we can and should solve them! - but ignoring the massive good it brings is not good. I'd also point out that many of the issues you outlined certainly predate the Internet, and were in fact much easier to accomplish - genocides happened and were easier to hide (or at least shape the narrative of) when information was a lot harder to distribute. People believed in all sorts of crazy things too, with little or no hard evidence.