"accuse of a mistake" - Translation from English to Arabic

- It still does. You accuse these men of cheating us - and it's a mistake?
-ماذا لو إتهمتيهم بالغش وأصبح خطأ عليك؟

You made a mistake, and instead of just facing up to it, you accuse your brother of plotttting ainst you.
وقد أخطأت، و بدلا من مجرد مواجهة ذلك، لك اتهام أخيك من plotttting ainst لك.