Free CCleaner is the number-one tool for cleaning your PC. It protects your privacy and makes your computer faster and more secure.
Link: https://www.ccleaner.com/
And for experienced geek look here too - https://singularlabs.com/software/ccenhancer/download-ccenhancer/, which helps to improve CCleaner.
For Windows 7 - 11, 32 and 64 bit. For CCenhancer you will need also Microsoft .NET Framework 4.0 ( https://dotnet.microsoft.com/download/dotnet-framework/net40 ) or newer.