What you post is manifestly untrue in this respect: Although it is true that the most of the suits brought by Trumps lawyers and supporters were dismissed by courts on technical grounds such as lack of standing, etc., not all the suits were so summarily dismissed. In a few cases the court heard evidence but rejected it as unsubstantiated, insufficient or defective.
Professional polling agencies adopted powerful statistical methodology after the polling failure in the Truman vs Dewy election. Subsequently, professional polling has correctly predicted, including elections to close to call, the popular vote winner in every election since Truman vs Dewey. Polling predicted a landslide win for Biden/Harris in the November election. And again the polling proved accurate. What you and others would have us believe is that polling in the November election was so drastically wrong as to have failed to predict a landslide Trump victory, as Mr. Trump has claimed he won. You can talk to a mirror and get total agreement, but you'll not budge any rational person with your nonsense. That nonsense has as it's origin Mr. Trump's own delusions. Even diehard Trump supporters acknowledge that he is a liar. So why do they insist on accepting his word that he one the election, despite the improbability of such and the overwhelming evidence to the contrary. Persons who cling to belief in conspiracies so complex that they would require willing complicity of hundreds cause most of us to shake our heads in wonderment of how anyone can be so naive and foolish.