Those steps are built incorrectly. They are the same ones I have.
They are for inside the pool. the handrails are on backwards, they should run from the top of the steps to the bottom.
The short peices that you have sticking out over the stairs go the other way. They are used to anchor the steps to the deck. If you do not have a deck, then you have to purchase the exterior stair kit.
This is how they should look.
View attachment 30705
-dave