If you're looking for a way to video record what you do on your computer, you probably don't need to install any third-party software. Windows 10 has a tool, the Xbox Game Bar, for gamers, that allows you to capture video of what's on the screen.
Click on the Start menu to go to Windows Settings. Enter the Games menu and make sure the Game Bar is in Enabled mode.
In the side menu, go to the Captures tab. By default, all video captures made with the game bar are saved in the :
Open the application (or game) whose video capture you want to record and activate the Game Bar using the Windows + G keyboard shortcut.