Solve : Microsoft Mouse on Imac Catalina - change back to Left click c

1.	Solve : Microsoft Mouse on Imac Catalina - change back to Left click control?
Answer» IMAC Catalina Version 10.15.6 - using Microsoft blue tooth mouse. The RIGHT click of the mouse no longer functioned - unknown reason. So - I went to Systems Preferences / Mouse / PRIMARY Mouse Button and changed the primary mouse button selection from LEFT to right. I wish to change it back but mouse functions do not work correctly. In 'mouse', the mouse pointer is flashing in the search window. I can not GET to the 'left' button to change it back. Suggestions?

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