That's not what he said. He said, he had not seen evidence of fraud on the level that would change the outcome of the election. He did not say that evidence does not exist.
Wondering if you realize that the people who committed the fraud are hiding the evidence; thereby make it hard to come by. If the crooks won't let you touch the machine you claim was rigged, how can you show evidence of rigging?
When I look for crooks, I look for the people standing in the way of investigations