expression
don't worry about it; never mind; forget about it
A casual, friendly phrase used to reassure someone that something is not a problem or to dismiss a minor issue. Often used when someone apologizes or seems concerned.
「遅れてごめん」「気にしないで」
"Sorry I'm late." "Don't worry about it."
失敗しても気にしないで、次に頑張ればいいよ。
Even if you fail, don't worry about it; just try harder next time.