The arrow/insertion point on my display keeps disappearing

The arrow/insertion point on my display keeps disappearing. Sometimes I can get it back by going up to a hotspot to blacken the screen, then when the display comes back up, the arrow comes back. But many times I just have to restart the computer. I have a MacBook Pro 15" late 2015, running Mohave 10.14.6.

[Re-Titled by Moderator]