If you look at the dimensions of the Samsung Note 10+ here news.samsung.com/uk/introducing-galaxy-note10-designed-to-bring-passions-to-life-with-next-level-pow...
And then the dinenstions of the case you mention here Samsung+Protective+Standing+Cover+note10+
That should help you to see what the dimensions should be around when adding the case.
There would be plenty of pouches available from places like Highstreet Stores or Ebay etc if the one you show isn't compatible..
Daily Driver > Samsung Galaxy s²² Ultra 256Gb 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. "