I don’t have sources on hand for the the first point, but I do for the second.

• Wall Street Journal: Mueller Doesn’t Find Trump Campaign Conspired With Russia
• Jacobin: Democrats and Mainstream Media Were the Real Kremlin Assets
• Washington Post: Russian trolls on Twitter had little influence on 2016 voters
• Jacobin: It Turns Out Hillary Clinton, Not Russian Bots, Lost the 2016 Election
• Matt Taibbi: Move Over, Jayson Blair: Meet Hamilton 68, the New King of Media Fraud The Twitter Files reveal that one of the most common news sources of the Trump era was a scam, making ordinary American political conversations look like Russian spywork
• Jacobin: Why the Twitter Files Are in Fact a Big Deal On the Left, there’s been a temptation to dismiss the revelations about Twitter’s internal censorship system that have emerged from the so-called Twitter Files project. But that would be a mistake: the news is important and the details are alarming.
• MSNBC Repeats Hamilton 68 Lies 279 Times in 11 Minutes
• Chris Hedges: Why Russiagate Won’t Go Away

As for the first point, it’s been covered by the likes of John Mearsheimer, Jeffrey Sachs, Noam Chomsky, Michael Hudson, and Glenn Diesen. Some political figures have admitted as much, but unfortunately I don’t recall who off the top of my head.