Misuse of You was for You were

Misuse of You was for You were

Don’t Say:
You was very foolish to do that.

Say:
You were very foolish to do that.

Note:
In conditions and wishes we can use were with the singular’ If f iwt you I’d go, I wish I were rich. Was is singular and were is plural, but with the pronoun you, even when it’s singular in meaning, we always use were.