be not (one's) cup of tea

be not (one's) cup of tea

To not be something one prefers, desires, enjoys, or cares about. Thank you for the invitation, but long-distance cycling just isn't really my cup of tea. When I found out that reading wasn't his cup of tea, I knew that there wasn't much of a relationship in store between us.
See also: cup, not, of, tea
Farlex Dictionary of Idioms.

not be your cup of tea

COMMON If something or someone is not your cup of tea, you do not like them or feel interested in them. I've never been the greatest traveller. Sitting for hours on motorways is not really my cup of tea. He's attractive in a conventional way — he's just not my cup of tea. Note: You can also say that something or someone is your cup of tea when you like them or feel interested in them. I don't have much time for modern literature. Chaucer's more my cup of tea.
See also: cup, not, of, tea
Collins COBUILD Idioms Dictionary, 3rd ed.

not be somebody’s cup of ˈtea

(informal, spoken) not be the kind of person, thing or activity that you like: He invited me to the opera but it’s not really my cup of tea. OPPOSITE: be (right) up your street
See also: cup, not, of, tea
Farlex Partner Idioms Dictionary
See also:
  • be not (one's) bag
  • cup of tea
  • cup of tea, one's
  • (one's) bag
  • bag
  • (one's) jam
  • watch the clock
  • worldly
  • worldly desires
  • earthly