What it means
てもしょうがない expresses that doing something or being in a certain state will not help, change the outcome, or serve any useful purpose. It often conveys resignation, frustration, or the idea that further effort is pointless. It attaches to a verb in the て-form, an i-adjective in its く-form, or a noun or na-adjective with でも. The familiar ending is しょうがない, while the polite counterpart is しょうがありません.
Usage note
しょうがない is a common conversational contraction of 仕方がない. The expression can sound resigned or dismissive, so it is not always suitable when a more neutral or encouraging tone is needed.
How to use it
彼が新人でもしょうがありません。
Even if he is a newcomer, it cannot be helped.
彼が不器用でもしょうがありません。
Even if he is clumsy, it cannot be helped.
結果が悪くてもしょうがありません。
Even if the result is bad, it cannot be helped.
そんなに心配してもしょうがありません。
There is no point in worrying so much.
彼が新人でもしょうがない。
Even if he is a newcomer, it cannot be helped.
彼が不器用でもしょうがない。
Even if he is clumsy, it cannot be helped.
結果が悪くてもしょうがない。
Even if the result is bad, it cannot be helped.
そんなに心配してもしょうがない。
There is no point in worrying so much.