Bayer Leverkusen coach Xabi Alonso questioned whether his side is “defending too soft” and said they’re “lacking stability” after the Bundesliga champions led twice against Werder Bremen but were held to a 2-2 draw on Saturday. “In the end, we can’t be satisfied after giving away the lead twice. It’s not the first time this has happened to us this season,” Alonso said. Just on Wednesday, the Bundesliga champions also had the lead and were held to a 1-1 draw at Brest in the Champions League. Earlier this month, they were up 2-0 against promoted Holstein Kiel, but ended the match with a 2-2 draw…