Magic mouse secondary right click won't work but will work as left click.

Problem: My mouse Secondary click will not work as right click. When activated only primary left click & scroll will work. If I change secondary click to left click then both left click & right click will work.

(Primary left click / Secondary right click = only left click works)

(Secondary left click / Primary right click = both left & right click works)

I have tried everything. I have done every single update as of May 28, 2019. I'm running macOS Mojave Version 10.14 iMac 21.5-inch, Late 2013. Processor 2.7 GHz Intel Core i5.

I have tried System Preferences>Mouse>Uncheck Secondary Click>Turn Off Computer>Unplug Power Cord From Computer>Wait 1 Minute>Plug Power Cord In>Turn Computer On>Turn Secondary Click Back On. -This seems to be the fix that everyone claims is guaranteed to work yet it does not. I have tried it 30 times already over the past week. Yes I could use my mouse with secondary click as left click but that is just backwards. There's no reason it shouldn't work as right click. It can't be a hardware issue since right click will work as primary click. Right click will only not work as secondary click. I'm using a Magic Mouse version 1. Still uses AA batteries. I've changed the batteries to new batteries 5 times already. Can someone please help me out?