How to Change the Font in Windows 11

Step1: Open Settings and select Personalization from the left menu, then Fonts on the right. Alternatively, access it via the Run command: ms-settings:fonts.

Scroll to Available fonts, and select the font you want to use.

Step2: Find the Full name in the Metadata section and note it precisely. For example,  Franklin Gothic Medium.

Step3: Open Notepad or another text editor and paste the following:

Step4: In the last line, replace Franklin Gothic Medium with the font name you noted in Step 2, keeping the quotes.

In Notepad, select File > Save as, and enter a name in the File name box. Select All files from the Save as type menu.
Add .reg at the end of the file name. Our example, Franklin Gothic.reg, Name it as you wish, but include that file extension.

Step5: Choose a folder to save the file, like the Desktop, and then click Save.

Close the text editor, then double-click or double-tap the REG file you saved.

Step6: Click Yes in the User Account Control window, then Yes in the Registry Editor prompt, and finally OK on the success message.

Reboot your computer to see the font changes. The quickest method is to right-click the Start button and go to Shut down or sign out > Restart.

Credit : https://www.lifewire.com/change-font-windows-11-6827640