Database
{"_id":{"$oid":"5fa2a64d267b8309fe781d98"},"location":{"type":'point',"coordinates":["115.880453987155","-31.925513609342207"]}}
Query
db.collection.aggregate([{"$search":{"location":{"$geoWithin":{"$geometry":{"type":"Polygon","coordinates":[[115.8455154208042,-31.97458396927722],[115.8830653531429,-31.97460201459856],[115.8823782261087,-31.94124526669114],[115.8498438592383,-31.9409449398814],[115.8455154208042,-31.97458396927722]],"crs":{"type":"name","properties":{"name":"urn:x-mongodb:crs:strictwinding:EPSG:4326"}}}}}}}])