[{_id:ObjectId("123456789101819202122232"),players:[{team:"Arsenal",name:"Saka",distanceRan:8590},{team:"Arsenal",name:"Aubameyang",distanceRan:9230}],timestamp:129380193,},{_id:ObjectId("123456789101819202999999"),players:[{team:"Arsenal",name:"Saka",distanceRan:7777},{team:"NotArsenal",name:"Aubameyang",distanceRan:9999}],timestamp:129399999,}]

db.collection.aggregate([{$unwind:"$players"},{$match:{$or:[{"players.name":"Saka","players.team":"Arsenal"},{"players.name":"Aubameyang","players.team":"Arsenal"}]}},{$group:{_id:"$_id",averageDistanceRan:{$avg:"$players.distanceRan"},"players":{$push:"$players"}}},{"$match":{"$expr":{"$eq":[{"$size":"$players"},2]}}},{$project:{_id:"$_id",averageDistanceRan:1}}])