Sorry to see you go but there are two ways to uninstall Free PDF Reader from your computer.

1- From Control Panel

(Windows 11, Windows 10, Windows 8, Windows7)

Search for Control Panel

Click Programs and Features

Search 'Free PDF Reader', select it and then click Uninstall button.

2- From Apps and Features

(Windows 11, Windows 10)

Search and open Apps & Features

Search for Free PDF Reader in the list and hit uninstall option from dropdown.