agree with those saying that Wallace was somewhat biased against Trump, but to be fair, Trump made his job extra hard, so I think at some point Wallace was just frustrated with Trump.
Also I think that by constantly interrupting Biden, Trump actually saved Biden at times. The best thing you can do with Biden is let him speak.
I think Trump had a poor night. Trump needs to capture some moderates and this is not how to do it. Winning a debate against Biden is the easiest thing in the world. Trump did much better against Hillary which is silly because Hillary is fully lucid and is smarter than Biden.