Are you trying to download the app from the Playstore ?
Is snapchat available in your country as your phone does meet the requirements for it.
If so then check in your Playstore and my apps and delete it from there if its showing and clear any cache and cookies that are relevant and try again @Lea11
Daily Driver > Samsung Galaxy s²³ Ultra 512Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "