Moonlighter

PC is Windows 10 based. Using CCleaner I have tried many times to thoroughly clean wipe free space on my C drive using many passes. Using Recuva shows many previously deleted files still recoverable. Using Eraser shows that Restore, hiberfil.sys, pagefil.sys, swapfile.sys have not been cleaned. Are these .sys files where the recoverable files are located? If yes how can they be cleaned?