My AGOL skill is between 0 and incompetent, but I couldn't see any spatial filtering being possibly (could very likely be wrong).
If there's no one to correct me and you do have Lat Long values in the data you could do a spatial query.
Here I've limited UK volunteer lifeboat stations by Lat and Long through attributes.
Throw in a bit of Pythagoras and you could do a buffer (beware it would not be truly circular).