db={"mosques":[{"_id":ObjectId("64a48ce14ebcac9ec9a3b0b9"),"address":"pti road , effurun","city":"Warri","state":"Delta","country":"Nigeria","name":"PTI central mosque","image":"","imamName":"Malam malam","verified":false,"active":true,"__v":0}],"prayers":[{"_id":ObjectId("64a5f9c2f11d298e808170cb"),"title":"Subhi","adhaanTime":"05:10","iqaamaTime":"05:20","imamName":"Malam Suleiman","mosque":ObjectId("64a48ce14ebcac9ec9a3b0b9"),"__v":0}],"subscriptions":[{"_id":ObjectId("64aac5e5fd0db3668806e4ee"),"user":ObjectId("649966a5cba88e510479da00"),"service":ObjectId("64a75b6e4c57834c539faea6"),"mosque":ObjectId("64a48ce14ebcac9ec9a3b0b9"),"__v":0},{"_id":ObjectId("64aac5e5fd0db3668806e4ff"),"user":ObjectId("649966a5cba88e510479da00"),"service":ObjectId("64a5f9c2f11d298e808170cb"),"mosque":ObjectId("64a48ce14ebcac9ec9a3b0b9"),"__v":0}]}

db.mosques.aggregate([{$match:{_id:ObjectId("64a48ce14ebcac9ec9a3b0b9"),},},{$lookup:{from:"prayers",localField:"_id",foreignField:"mosque",pipeline:[{$lookup:{from:"subscriptions",localField:"_id",foreignField:"service",pipeline:[{$match:{user:ObjectId("649966a5cba88e510479da00"),},},],as:"subs",},}],as:"prayers",},},])