hello my tax return is delayed and i wanna know how it could happen.

Only the IRS can tell you why your refund is delayed.   TurboTax does not get any information from the IRS after you file your tax return.   Has the IRS put your return under review?   Have they sent you a letter asking for more information?   You can continue to watch the IRS refund site for information.

Once your federal return has been accepted by the IRS, only the IRS has any control.  TurboTax does not receive any updates from the IRS. Your ONLY source of information about your refund now is the IRS.

You need your filing status, your Social Security number and the exact amount  (line 35a of your 2024 Form 1040) of your federal refund to track your Federal refund:   

https://www.irs.gov/refunds