[{_id:ObjectId("6616851ed50d6d1451fa8176"),phone:"+7(926)458-54-52",name:"Aboba"}]

db.collection.aggregate([{"$set":{"phoneForSearch":{"$reduce":{"input":{"$regexFindAll":{"input":"$phone","regex":"\\d+"}},"initialValue":"","in":{"$concat":["$$value","$$this.match"]}}}}},{"$match":{$expr:{$or:[/** phone search*/{$ne:[-1,{"$indexOfCP":["$phoneForSearch",/**user input here*/"7926"]}]},/** name search*/{"$regexMatch":{"input":"$name",/** name regex here*/"regex":"^abo","options":"i"}}]}}}])