The question isn't about if he lost or not, it is the questioning of the procedures in an election. A thorough investigation into any anomalies or suspicious activities that misdirected the results should have been welcomed.
I've said it before that the damage done has had global consequences. The continued attacks against him just reinforced for the world to the point that in Venezuela three Americans were arrested for trying to assist in a coup. In the past the entire world would side with the U.S and any despot would be rejected and null and void as a leader, the three Americans would be viewed as railroaded and promptly freed.
This isn't happening now and Western citizens should be very afraid. This is a sign that first, European governments are further left than in the last 25 years at least and won't accept the U.S lead world order (leaning more to China), second, that these other nations intelligence agencies have assessed the situation in the U.S and determined that you have your own election and political controversies which make democracy more questionable. People see and read about the pile on against Trump, even the comments in left wing European news outlets are contrary to the messages they push.
Wake up. None of this is worth it to try and avoid four more years of Trump. I suspect this goes far deeper than just Ukraine upsetting the pro-war crowd because Liz Cheney and others were going after Trump long before Russia attacked Ukraine