How to remove tiles from wall?
With the wall behind the tiles being drywall you would be wise go rip the tiles and drywall down
Removing the tiles will tear the paper and possibly take chunks of the gypsum out. Even going very slow and trying the Sheetrock will be heavily damaged.
I would rip the tile down with the Sheetrock, we can’t tell how wide the wall is but it will be much faster to demo and replace.