No one here would know why you have received your 2021 refund yet. Only the IRS (and State if any) would have information on your refund. Did you mail your 2021 return so you would have proof it was delivered? You can check on the IRS website, Where's My Refund, to see if there is any information regarding the processing of your return and your refund.
You can also contact the IRS to see if they received your 2021 return.
IRS Toll-Free Help
You may call 800-829-1040 with any Federal tax questions.
https://www.irs.gov/government-entities/federal-state-local-governments/federal-state-local-employme...
