There are plenty of programs around to overwrite magnetic HDs multiple times to preclude resurrecting the data.
That may be true on SSDs but military specs for hard drives require either hammering it or rewriting a series of 1’s and 0’s four times. Even then, on those hard drives, you can still tell — with really expensive equipment. That is why I was told “bludgeon it and drop it in the ocean” if you want to be safe for those hd files. SSDs — I don’t know of protocols for them.