Hi Leslie - sorry that your cheesecake crust comes out soggy. It may be that water leaks into the seams of the springform pan. You can line the bottom with tin foil (overhang it), then attach the side, then take the overhanging part and crumple it to try to seal all the edges. That may help.
On the other hand — it may be the recipe. It’s important to bake the crust for at least 10 minutes in a preheated 350 degree oven. Then let it cool. Then fill it.
Another trick you can try — add some ground nuts to the crumbs. Nuts always crisp up nicely and stay crispy better than crumbs do.
Another tip: bake the crust for 10 minutes, brush it with an egg wash (beat an egg with a small amount of water) and bake for another 3-4 minutes.
And another: let the crust cool, then layer on a thin layer of melted chocolate, jam, lemon curd or the like. This adds a flavor dimension of course, but it also helps keep the crust crispy.
After sitting in the fridge, even after all that, eventually cheesecake crust will become soggy just from the moisture in the cheese. But the tips above will help get you a better crust at least at the beginning.