be out of someone's league
US /bi aʊt əv ˈsʌm.wʌnz liːɡ/
UK /bi aʊt əv ˈsʌm.wʌnz liːɡ/

1.
高嶺の花である, 分不相応である
to be too good, skilled, or expensive for someone to have or achieve
:
•
She's so beautiful, I feel like she's completely out of my league.
彼女はとても美しいので、完全に高嶺の花だと感じます。
•
That luxury car is definitely out of my league right now.
あの高級車は今、間違いなく私には手が届かない。