Database
[{_id:ObjectId("6292722ea8173377658171ff"),title:"work-list",tasks:[{name:"go to work",createdOn:"2022-05-28T19:04:14.799Z",solvedOn:false,_id:ObjectId("6292722ea8173377658171f8")},{name:"do some work",createdOn:"2022-05-30T17:20:56.272Z",solvedOn:false,_id:ObjectId("6294fdbf8717c09237c5098e")}],__v:0}]
Query
db.collection.aggregate([{$match:{_id:ObjectId("6292722ea8173377658171ff")}},{$project:{_id:0,res:{$filter:{input:"$tasks",as:"item",cond:{$eq:["$$item._id",ObjectId("6294fdbf8717c09237c5098e")]}}}}}])