こともできた

could also have done

→ こと
phrase Rare #40,565
could also have done Follows a verb in its dictionary form; も adds the meaning “also.” Depending on context, it can describe something that was possible or something that was successfully done.
JA: 早めに出発することもできた。
EN: We could also have left early.

結局、ちゃんと食べることもできた。

In the end, I was able to eat properly too.

空港へ迎えに行ってあげることもできたんだけど。

I could have gone to the airport to pick you up, though.

あそこで立ち去ることもできたはずです

You could have walked away then.

— ウィキッド ふたりの魔女 (2024)

私に従うこともできた

You could have followed me too.

— パンズ・ラビリンス (2006)