You need a special kind of idiot to throw a 1-0 lead to a very beatable Croatia side with 20 mins to go.
The manager is not on the pitch. He can't defend in place of his players. What the feck are you even going on about here, seriously. How did Southgate throw away a 1-0 lead against Croatia, do explain please
He chronically persisted with a back 5 far too long and has weird personnel favourites that don't make sense.
Uh? Back 5 worked just fine in Russia, and he already dropped it for the Euros except when he used it to surprise the opponent - which generally worked, too (see the final)
Also this notion that we can't upgrade on him is such bollocks. The man's a flop manager from Middlesbrough. You can pick 20 names with better pedigree than he has.
I'm saying it's very unlikely that you would upgrade given the quality of the job he is doing right now. Pedigree means feck all at international level. Capello is one of the very best managers the sport has ever seen and look how that went.
You are greatly underestimating how difficult it is to even get the results England managed under him(easy draws, sure, you've still cocked those up in the past and hey, remember what Napoleon said about good generals vs lucky ones?) massively overrating the impact of the manager on individual international games, and choosing to ignore the fact that as it stands England are one lucky break away from winning the Euros - like, say, winning a penalty shootout
Tl;dr Southgate is doing a 8/10 job, the only thing England missed to win stuff is more luck(and possibly Kane not missing crucial chances) and the chances of the next guy doing better than that are so small that England would likely be better off sticking with the guy. Want to know the difference between Scaloni and Southgate? His players won a penalty shootout. That's it.