The best analysis of Robert Mueller's investigation was written by Barbara McQuade and Joyce Vance. Both are former US Attorneys with extensive academic experience. This is from their June 24, 2019 Tima Magazine article, "11 Mueller Report Myths Just Won’t Die. Here’s Why They’re Wrong.
"When we joined other legal experts earlier this month to testify before the House Judiciary Committee regarding lessons from special counsel Robert Mueller’s investigation, it became apparent from the questioning that a number of misconceptions continue to exist regarding Mueller’s findings. The narrative was shaped by Attorney General William Barr, who issued his description of Mueller’s conclusions three weeks before the public saw the full 448-page report. In a letter to Barr, Mueller complained that Barr’s summary “did not fully capture the context, nature and substance” of his team’s work and conclusions, and created “public confusion.” Here is our effort to dispel some of those myths.
Myth: Mueller found “no collusion.”
Response: Mueller spent almost 200 pages describing “numerous links between the Russian government and the Trump Campaign.” He found that “a Russian entity carried out a social media campaign that favored presidential candidate Donald J. Trump and disparaged presidential candidate Hillary Clinton.” He also found that “a Russian intelligence service conducted computer-intrusion operations” against the Clinton campaign He found that “a Russian entity carried out a social media campaign that favored presidential candidate Donald J. Trump and disparaged presidential candidate Hillary Clinton.” He also found that “a Russian intelligence service conducted computer-intrusion operations” against the Clinton campaign and then released stolen documents.
While Mueller was unable to establish a conspiracy between members of the Trump campaign and the Russians involved in this activity, he made it clear that “[a] statement that the investigation did not establish particular facts does not mean there was no evidence of those facts.” In fact, Mueller also wrote that the “investigation established that the Russian government perceived it would benefit from a Trump presidency and worked to secure that outcome, and that the Campaign expected it would benefit electorally from information stolen and released through Russian Sources."
Find this issue of Time and read the entire story.