Bayern Munich coach Thomas Tuchel said he was his own biggest critic after pundits slammed the coach for not taking more of the blame for the 1-0 home loss to Werder Bremen on Sunday. Champions Bayern slipped seven points behind unbeaten Bundesliga leaders Bayer Leverkusen but can claw back three points in a rearranged game at home to Union Berlin on Wednesday. “I’m the first to question myself when I see so little of what I want to stand for as a coach on the pitch,” he told a news conference on Tuesday. Tuchel criticized the lack of “competitive toughness” and “competitive mentality” against…