There are many legal experts who disagree with you, Donald can be charged with mass second degree murder both federally and the states where the law allows for the charge. The governors who followed Donald and ignored their public health officials can be charged with manslaughter, with Trump the Woodward tapes meet the criteria for second degree mass murder.
Here is the latest from a legal expert who says Donald can be tried for second degree mass murder in an earlier video, he makes the case. Here he looks at the realities of a McConnel senate majority on justice.
Let's Talk Criminal Accountability for the Trump Years Under the Likely Biden/McConnell Power Split
As we wait for final results in the presidential election, people are asking what happens to the prospect of criminal investigations of the crimes that have been committed by Trump and company during the past four years IF Joe Biden wins the White House but Mitch McConnell and the Republicans retain control of the Senate. Here's a discussion of some of the obstacles and some of the opportunities of that particular split of governmental power.