You cannot or need to defrag SSD's, NVME or Sata models. Windows knows that when it installed so it won't let you. Defragging a storage drive involves reading files from and writing the same files to that storage drive. That's OK for an old spinning platter hard drive, but not for SSD's. They would wear out much faster as you can only write files to an SSD a certain amount of times, like you can with any flash memory storage device such as a SD card or a pen drive. You can 'trim' an SSD which tells the SSD controller which memory cells are no longer used and can be wiped, but thats it. Windows 'trims' SSD's automatically though I think you can set a schedule for them to be 'trimmed'