Only the incredibly corrupt Schröder has been a worse post WW II chancellor.

Merkel is directly responsible for allowing unvetted Muslims into Germany.  Not only do most of these people have no job skills, but they have no interest in learning German or assimilating.  All most of them want to do is live off the very generous German welfare system.

Many of the Muslim immigrants have proved to be criminals.  For example, on New Year's Eve 2015 thousands of Muslims raped about 1200 German women around the Köln Bahnhof;  Merkel's initial reaction was to try to cover up these atrocities.

Just before Christmas 2016 another one of Merkel's unvetted Muslim terrorists murdered 12 and seriously injured scores of people in Berlin.

Merkel's disastrous open borders immigration policy was the main cause of Brexit.

Also, Merkel has unwisely ditched nuclear power and now Germany must import 2/3 of its energy.

Even Merkel has admitted that her multicultural/openborder/energy policies have failed.