ためしがない

have never

→ 試し
phrase Rare #35,037
have never Used after the past form of a verb to emphatically say that something has never happened or has never been done. The phrase often conveys criticism or frustration.
JA: 彼が時間どおりに来たためしがない。
EN: He has never once arrived on time.

気の弱い男が美女を得たためしがない

No timid man has ever won a beautiful woman.

弱気美人を得たためしがない

No one has ever won a beautiful woman by being timid.

あなたって必要なにいたためしがないんだから

You’re never there when I need you!

君が僕を信じたためしがない

You’ve never trusted me.

あいつは約束を守ったためしがない

That guy has never kept a promise.