My keyboard deletes forward?

My keyboard on a Lenovo laptop has started deleting text forward and not backwards.

How do I reset this to the normal way?

INS key on your keyboard

Does it delete backward to?

That's correct.

If you press the Del key it DOES delete forwards. If you press the Backspace key it deletes from right to left. I.e. Backwards.

Buy a new keyboard?

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