The problem for Trump is that he doesn’t have the facts to support a claim. And the Supreme Court isn’t going to be hearing new facts that they didn’t present in the trial court. Both the trial and appeal courts with Republican judges said the case had no merit. You don’t say that as a judge, especially about the person who appointed you to your position, if it is a close call on the facts.
You should be relieved to know that there was no fraud and Biden won fair and square. All the Republicans overseeing elections said the same thing.