You sound like you’re right handed and just happen to write with your left. Lol

But really, your “definition” wouldn’t be ambidextrous. That’s for people who can do most tasks pretty much equally with either hand.

You would be known as “cross dominant”. That’s where you’re better with one hand or the other, depending on what task it is.

I’m a fairly standard lefty myself, Im able to do most things pretty well with my right hand, but mostly always best with my left.