Walker and Oz were the candidates that Republican primary voters chose. In the case of Walker, he is a flawed candidate, but so is Warnock. As for Oz, Trump's endorsement put him over the top. With regard to both states, Atlanta, Philadelphia, and their respective suburban counties are black holes of manufactured votes. Additionally, when did Pennsylvania ever vote for a conservative, except for Santorum, who was a social, though not an economic conservative? And Santorum was soundly defeated in his attempt for a second term.
The Democrats may concede the House and even the Senate, but they succeeded in holding the key gubernatorial seats of Michigan, Wisconsin, and Pennsylvania, with Nevada and Arizona yet to be called, and Georgia in the hands of the RINO Kemp. So the pieces are in place for another 2024 steal.