lose one's way

verb2

1. •
   To become lost; to lose one's bearings, or idea of where one is.

   • It was certainly rare to see a Juventus team lose their way so badly bearing in mind it was 1-1 at the break and, if anything, Massimiliano Allegri’s players had looked the more rounded side. — 2017
2. •
   (figurative) To cease to succeed or to follow the right path; to fail.

   • The band lost their way after their second album, and split up after a string of failures.