Everybody who is saying Biden should step down doesn't realize it's too late for that...
Neither Trump nor Biden can step down at this point because the consensus among most voters is already locked in between the two of them.
Stepping down this late (yes July is late) in the election season would essentially be like forfeiting, with that said I don't think Biden did as bad as the news stations and supposedly the Dems are making it seem.
Seems like he didn't say what many were expecting him to say so for therefore the good stuff he did say seems not to matter but it's not like Trump was out there doing any better outside of playing into the “they out to get me” and his usual MAGA rhetoric at an arguably worse and more desperate pace compared to his 2016 and 2020 debates.