HOW DO I CORRECT MY ESTIMATED TAXES FOR 2021. TURBO TAX IS MUCH TOO HIHG SINCE MY INCOME HAS DECREASED!??

In the Personal taxes section, under Other Tax Situations, you can go thru the Estimated taxes Q&A again and adjust those expected income values.

OR, if you already know about how much you want to pay, you can ignore the Federal estimated taxes section entirely, and just pay what you think you need to pay on the IRS DirectPay website.  The federal estimated vouchers are not sent to the IRS when you eifle...they are for your "possible" use.

https://www.irs.gov/payments/direct-pay

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IF you do want to actually paper mail in the payments, you can also get paper/PDF forms from the IRS and ignore the TTX forms:

https://www.irs.gov/pub/irs-pdf/f1040es.pdf