You can't win them all

Similar in sentiment to the preceding entry.

Wade took him by the shoulder and spun him round. ‘Take it easy, Doc. You can't win them all.’
[1953 R. Chandler Long Good-bye xxiv.]

‘The finger being found on the footpath was just bad luck on the murderer's part.’ ‘You can't win them all,’ said Crosby ambiguously.
[1984 ‘C. Aird’ Harm's Way xviii.]

‘They say you can't win them all‥however, as evidenced by Brutus Thornapple, evidently you can lose them all!’
[2002 Washington Post 18 Mar. C11 (Born Loser comic strip)]

Related to: winners and losers

Bibliography of major proverb collections and works cited from modern editions is available here.