Uninstalling of a program is a PC is a process of removing or erasing a software application from a PC by deleting all the files, settings and components associated with a particular software application or program.
To uninstall a program from a PC, go to your control panel (Cpanel), search for or navigate to ‘Programs and Features’, you will see list of programs installed on your PC, click on the program you wish to unistall. There are two ways you can uninstall a program, right-click on the program you wish to uninstall and select uninstall or click on uninstall once you select the program.

If I want to uninstall the ‘Lightshot’ program from my PC, i can use either way highlighted up to remove the program. Confirm with OK or yes after selecting uninstall.