In the period between the election and January 6th. there were something like 80 legal challenges. Do you know how many of those challenges progressed to the point where actual evidence was presented? None of them! They were all thrown out for "lack of standing".
The person or body bringing an action is claiming to have been "damaged" by someone else's behaviour, and wants the court to make him "whole" again, usually (but not in this case) by the award of money. In every case, the court ruled that the person bringing the case was not personally damaged, or was damaged by someone other than the defendant. Hence no "standing" to continue.