Is it acceptable to use ‘private’ twice in each of the given sentences? Are ‘by’ and ‘to/so as to/in order to’ correctly used?

Is it acceptable to use ‘private’ twice in each of the given sentences? Are ‘by’ and ‘to/so as to/in order to’ correctly used? Thank you.

1. I stopped receiving private messages from my ex-girlfriend by blocking her on private
2. To/so as to/in order to stop receiving private messages from my ex-girlfriend, I blocked her on private