A few days ago, Windows 11 KB5063878 was updated. Later I uninstalled it.Now, I felt lag while running the PC for a few days. Later, after checking the health of the SSD, I saw that the health of the SSD has decreased. Now I want to go back to Windows 10.

Now the main question is,

If I install Windows 10 on my PC, do I have to download the entire Bitcoin Core again?

Or if I want, can I backup my Bitcoin Core files to another drive and restore them later?
 
Because I wanted to run Bitcoin LND node after a few days.