The future of the EU is a lot brighter than that of the UK. It is ludicrous in the extreme to believe it will not survive brexit.
Not at all, a few members states of EU are doing well, a large number of others are doing very badly and the EU has made it quite clear that they cannot pull them out the ditch.
There are very few countries in the World that are doing badly except those at war, the amount of countries in the EU that are doing badly is disproportionately large.
Greece has suffered deflation for 39 months on the run and they are about to be hit with yet more conditions that limit their growth and employment rate.
Spain is in its 10th month of deflation.
Bulgaria is in its 8th month of deflation.
Croatia is in its 24th month (or more) of deflation.
Cyprus has over 24 months of deflation.
Italy is in its 4th month of deflation.
The EU is in its 4th month of deflation.
France is in its 4th month of deflation.
Portugal will probably go into deflation.
The Czech Republic is probably just about to go into deflation.
Germany is wavering around in and out of deflation.
Austria is just keeping out of deflation.
If you want I will look up the rest but there is no need as I'm sure you get the gist. There are a few doing well, but not many at all (eg UK, Belgium etc)