[{"_id":ObjectId("64f029e54cfd5850f6c1a30f"),"pendek":"test_123_456","panjang":"working tester mongodb","landing_page":"https://tester.com/","user_page":"https://iamold.web.app\n","web_saya":"https://yoootester.web.app"}]

db.collection.update({"user_page":{$regex:"iamold"}},[{$set:{"user_page":{$replaceOne:{input:"$user_page",find:"iamold",replacement:"iamnew"}}}}],{multi:true})