If you don't like defending them, then fucking don't. It doesn't take much to admit that you should probably vote for them, and that's all you really need to do with them. They're not your friends, stop acting like anything they do is good. He is literally boasting about his tough border policy, which by the way has some absolutely horrific ongoing consequences to this day at the border. The gross mistreatment of legal asylum seekers goes on to this day, you just don't hear about it because the republicans don't give a shit and the dems know it would look bad to yell about it when it's their guy in office.
Everything you named has a nice-sounding marketable title, but on closer inspection to just about anything they do I've found it's always bare-minimum perfomative change at the absolute best. It is pure spin.
I do not understand why you would agree that they suck but not want anybody to criticise them. Biden could end military support for Israel tomorrow and basically cinch the election. He won't do it, and maybe that means Trump will win. I don't know why you wouldn't want people to talk about that.