MUNICH—Germany finally clicked into gear at the European Championship, with a little help from defending champion Portugal. The Portuguese became the first team to score two own-goals in one game at the continental tournament, giving the Germans a 4-2 victory on Saturday and ending fears of another group-stage exit. Cristiano Ronaldo put Portugal in the lead in the 15th minute against the run of play. It was his first goal against Germany and his third at Euro 2020. It also extended his all-time tournament record to 12 goals. But defenders Rúben Dias and Raphaël Guerreiro put Germany ahead before halftime by scoring into their own net. Kai Havertz and Robin Gosens then scored two more for Germany early in the second half—becoming the first players within the squad to score at a European Championship. Diogo Jota got one back for Portugal in the 67th after Ronaldo acrobatically saved a free …