I need a tutorial of Windows 10 clean installation

Performing a clean installation of Windows 10 can help resolve issues, improve system performance, and give you a fresh start. What You’ll Need:

• A Windows 10 product key (if you don't already have it, you may need to buy one).
• A USB flash drive with at least 8GB of free space (this will be used to create the installation media).
• A backup of your data, as a clean installation will erase everything on the selected drive.

A clean installation will erase all data on the chosen partition, including applications, settings, and files. And a stable internet connection is recommended during the installation and update process.

Create Installation Media:

Choose the option Create installation media (USB flash drive, DVD, or ISO file), then click Next.
Select the appropriate language, edition, and architecture (32-bit or 64-bit) and click Next.
Choose USB flash drive (ensure it’s at least 8GB and empty) and follow the prompts to create the installation media.

Make sure your PC meets the minimum requirements for Windows 10. If you don't have a product key, Windows will run in a limited state until you activate it.