Open Control Panel\All Control Panel Items\Mouse, move to Pointer Options tab, check Show location of pointer when I press the CTRL key, OK. Then your mouse pointer will be seen easily by clicking CTRL.
If you find it harder to see the keyboard typing cursor, please refer to this article to Change Text Cursor Thickness in Windows 10.
https://www.tenforums.com/tutorials/95305-change-text-cursor-thickness-windows-10-a.html
Also, you could upgrade to the latest Windows 10 21H1 version to see if keyboard typing cursor more clear. It is easy to upgrade to 21H1 by Windows Update Assistant.
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