How much of a hike can I ask for based on the offer letter I received?

30 maango, tabhi 20-30 milega If you ask less, you'll get lesser

Ask according to market standards, not according to your current ctc

I didn't received the hike which was mentioned on rewards & performance portal I was supposed to get 25 K salary from this month But they gave Same salary like previous month 21000 Accenture did a scam with me... What should I do now... Pls help