Samsung Note 8 is becoming slow and slow day by day. Don't know what is the reason. Battery Draining a lot. If we accept 5 to 10 calls, then it slows down a lot. What to do?? Anyone facing the same problem???

After the latest update handset is freezing a lot. very slow access takes place. mobile is slowing down. battery is draining a lot. pls update about this. what needs to do.