Upset over job offer amount

Hey guys I've been interning in my company for a year and after that I'm currently on extra month as i got moved to a different team and in this team i was able to bring in good progress so far. Like if continued and when scaled up it can save the company a lot of money. My manager scolded me for coming late once it was done he appreciated and even his peer managers appreciated him for that. My team lead and manager are taking up the credits sometimes when they're explaining to others, that's okay i don't mind of credits or visibility. So i got message from hr and told me how much package I'm getting and that i might officially get offer letter after a few days.

It's 14lpa.(12.3 after tax i guess) I mean it's good but i wished if it was maybe 19 lpa like my other freinds that got full time before me. I mean they are in dev role in dev team .

But i work as a dev and tester both , but i fall under a qa team so I'm assuming im gonna be paid that way.

Should I ask for negotiation when i actually get offer letter ?

Please let me know guys