Open the control panel.
Open the "Control Panel", then find "Font" in it, double-click this icon, and you will see the fonts installed in your computer;
Copy font file
Download the fonts you downloaded (if it is a compressed file such as RAR, you must first extract them to get font files with extension TTF, TTC, OTF or FON) and copy these font files directly into the font folder opened in the first step.
Find the downloaded font
Now you can find the fonts you downloaded in the font list of the word processor.
Close the word processing program
Note: If the font is not in the font list at this time, it may be that the font information has not been added to the registry. Solution: Open the font folder in the control panel, find the font you just installed, double-click to open it, then close it, and it's OK. Of course, you have to close word processing programs, and then generally open them to find the fonts you installed.