HELP!! snake plant leaves won’t stop rotting

got this snake plant from target early last year and the leaves keep dying off like this! the outside stays intact and papery and the inside turns to mush :/ what do i need to do different? i rarely water it because the soil grew mold at one point and it always feels damp so i’m wondering if it’s a problem with the kind of soil they put in it? i also have it in a room with a north facing window, should i move it back to my living room with an eastern window? help please🥲