Need replacement magic mouse for iMac retina 4k 21.5
My mouse that came with my iMac is acting up. I keep getting left click boxes showing up when I am not left clicking. I am willing to buy a new mouse but I need to know why the latest version in the Apple online store is not compatible with my iMac. I have 21.5 inch retina 4k Late 2015 running Big Sur 11.7 It seems to be compatible with everything but the one I have. Can someone help me?
iMac 21.5″, macOS 11.7