Disk cleanup is part of Windows 10 tools and it is essential in keeping your computer up and running in optimal settings and to free so much needed space as well as remove temporary files that can accumulate over time.
Using disk cleanup from time to time is recommended and a very useful habit that will save you some headaches and optimize your computer running time, speed up boot sequence, etc. Think of it like cleaning up your desk, from time to time it can get too overwhelmed with junk and non-important things and if you are keeping it tidy all the time each time you need to find something it will be much faster and easier, same goes with computers, so if you do not have it, try to develop a habit that once per month you start disk clean up and remove trash from your hard drive.
In order to do so, press ⊞ WINDOWS + E to bring File Explorer up
Once File Explorer is up and running right-click on the hard drive you wish to run disk cleanup on and click on properties.
Properties Windows will open on the general tab, on that tab you have disk cleanup on the lower right part of properties, click on it.
Wait for Windows to gather information about your hard drive and files on it. After it is finished you will be greeted with the next screen:
Here you can thick and mark which items you would like to get rid of and which ones you would like to keep. Note that you can freely tick all of them and remove them since removing these files will not break WIndows in any way. make your choices and click on ok. You can also click on Clean up system files to run system files cleaner and get rid of junk there, you will not be able to choose any options there, Windows will alone clean up what is not needed.
After disk cleanup is finished least thing you will have is more free disk space, but like mentioned, keeping your Windows and computer healthy goes a long way in its usability, speed, and performance.