revise on our own/ourselves

[GUEST2008]

Hi

1.If we do not revise on our own we won't learn much.
2.If we do not revise ourselves we won't learn much.

Are both phrases correct?

[Anglika]

Hi

1.If we do not revise on our own, we won't learn much.
2.If we do not revise by ourselves, we won't learn much.

Are both phrases correct?

With these changes, yes