Conditional $lookup

Hello. This conditional lookup does not work for me
MongoDB version: 5
GUI: robo3t-snap


updatedFieldsByContractor.updatedValues.cities there is not in the original document. it just appears here because of that lookup. I mean when i run this command: db.getCollection('contractors').find({ _id: ObjectId('htat document') }) to get the same document it had not updatedFieldsByContractor.updatedValues.cities field. what should i do to lookup conventionally?