From Heather Cox Richardson Letters from an American:
This resolution was a generous offer to Republicans. It limited its condemnation of Trump to his quite obvious refusal to accept the election results, rather than digging deeper into his behavior. Pelosi also called for Unanimous Consent to bring up the Raskin resolution. This was a way to give cover to Republicans who didn’t want to go on the record against Trump, but who want him out of power in favor of Pence.
Although extremist Republicans are trying to argue that removing Trump shows Democratic partisanship, in fact, Pelosi was trying to give Republicans as much cover as possible.
It was a Trump Republican who shot that down.