By Paul Martin Andy Robertson insists Scotland can still make history at this summer’s European Championships by shifting their mindset from feeling ‘happy to be there’. Robertson will captain his country in Germany, as he did at Euro 2020, with the host nation lying in wait on the opening night of the tournament on June 14. The Liverpool full-back went off injured in Tuesday night’s 1-0 friendly defeat at home to Northern Ireland as Steve Clarke’s side’s winless run stretched to seven matches. Scotland have never progressed past the group stage in 12 previous visits to major tournaments, but …