How far can we go on offers being 6YOE Java Full Stack Dev?

I am currently working at Virtusa for 17LPA with 5.9YOE.

I've got few offers from SBC at 25.3LPA, all fixed.

Is asking for 30LPA an issue or red flag for future companies to ignore my profile?

I'm interviewing or cleared few Product companies, but waiting for HR negotiations.

Can you suggest some negotiation techniques please?