Is there a way to get expected receive amount?

Yes, there are ways to get the expected receive amount. You can fetch a quote with mode: "receive" which will return the exact amount that needs to be sent to receive the amount you wish to get. Alternatively, you can request the quote with mode: "pay" and amountOut will simply be amountIn minus fee.

The quote endpoint should be used as the source of truth for expected amounts due to dynamic gas and fee changes.