If you have regular KDE I urge you to just shake your mouse vigorously for ca. a minute. The cursor has this mouse finding feature where the mouse cursor gets bigger if you shake it. It can get comically big, like fill the whole screen big.
One of the best features I have ever seen.
I discovered it yesterday by accident. Not the feature but the fact the cursor just keeps on growing and growing. Kinda funny but also possibly a bug.