Pence, who stood to lose his bid to remain VP, certified the election. January 6th, which should never have happened and was an embarrassment, wasn't an "insurrection" and had no planning or any means whatsoever to overthrow the government, and most got bored after a few hours and went home. Trump left office despite Dems claiming he would never do it.
Again Dems have been denying Trump's election in 2016. The whole Russian collusion farce was an attempt to remove a legitimately elected President.