https://support.apple.com/guide/mac-help/magnify-the-mouse-pointer-mchlp2920/10.13/mac/10.13

"To make the pointer larger temporarily, quickly move your finger on the trackpad or quickly move the mouse. To turn this feature off, deselect “Shake mouse pointer to locate” in the Display pane of Accessibility preferences."

Try to disable that feature, you can find your pointer, you don't need it to become larger just so you can see it lol... also see if you can restore your system fonts to default size 100%. Disable all the cool and useless animated theme features in your OS. Make it as basic as possible.