Should Republicans be asking themselves how to reach a greater portion of the electorate rather than cast blame on fraud and conspiracies?

After the 2016 election, Democrats were criticized for blaming Russia and emails and misinformation for their loss and not doing enough introspection on why they lost to someone as contemptible as Trump and why their message didn’t resonate with a wider portion of the electorate. They were accused of ignoring and dismissing certain demographics during the election.

If Biden is a senile old codger, then Trump’s loss to him should be a time of reckoning. What will the Republican party look like post-Trump? Will the Republican party ever win another popular vote?

Disclaimer #1: I am not a member of any party.
Disclaimer #2: Yes, I know that fraud investigations are ongoing. You can also take this as a hypothetical to answer if Biden is sworn in on January 20th.