lose your touch

US /luːz jʊər tʌtʃ/
UK /luːz jʊər tʌtʃ/
"lose your touch" picture
1.

to no longer be able to do something well that you were previously good at

:
The chef used to be amazing, but he seems to have lost his touch lately.
After not playing for years, I've really lost my touch at tennis.