After back-to-back group stage exits on the world stage, Germany is desperate to harness the winning mentality of its predecessors at this summer’s showpiece event. Die Mannschaft have four World Cup titles in its trophy cabinet, the second-most ever. Yet in the years following its 2014 triumph, the team has struggled to produce when the lights are the brightest, writing an unwanted narrative for a country known for its dominance on the pitch. A new generation of stars face the tough battle of righting a sinking ship, but Jamal Musiala, Florian Wirtz and Co. have the advantage of competing in a group of Ecuador, Ivory Coast and Curaçao—perhaps just the confidence boost Julian Nagelsmann’s men need to get the tournament off on the right note.…