What will u do when husband told u "ya u are better off dead, this is everyone's wish, when u are gone, im sure everyone will be very happy" "how i wish you really go and die"

Just leave. No point in throwing a tantrum, scolding him or slapping him. Don’t waste your efforts or time on this kind of people who don’t appreciate you. Be the person with the bigger heart. Waltz out of his life gracefully. One day, he will realise what an a**hole he was & come begging for your forgiveness.