Have to Pay Insurance of 1,70,000- any ways to get cashback by using cards

You might save more if you rethink about those insurance subscriptions instead of cashbacks IMO.

onecard,icici  amazonpay, both will give 1%

You can get 5% from sbi cashback card when you buy APay gc and settle via Amazon app. But there are too many restrictions these days.

Maybe Amex has flexible rewards, you should check with any amex user.