No one here would know why your refund was not what you expected.  You will receive a letter from the IRS and/or State explaining the difference in your refund.

Why is my direct-deposited refund or check lower than the amount in TurboTax?

https://ttlc.intuit.com/community/refunds/help/why-is-my-direct-deposited-refund-or-check-lower-than...