I have a lot of time for Jezza, but he's really piss-poor at handling manufactured media pile-ons, such as the false accusations of antisemitism that were directed at him and other Labour socialists. A more street-smart leader would have been better able to counter the lies, and to remove the disloyal party apparatchiks and Blairite weasels who facilitated them.
He's also let himelf be suckered by Putin. He seens to think it's still the jolly old USSR and not a security-mafia fascist state.
Even so, unlike Starmer, at least he's not an appeaser of racist cunts.