My estimated amount inputted through Healthcare was more than my true amount. Why would I have to pay the entirety back?

Please clarify...are you talking about inputting the numbers on the 1095-A? And what is this "entirety" you are referring to? The Premium Tax Credit on form 8962?

We in the Community cannot see your private tax data, so please give us details so we can help you.

When I input the 1095-A information, it states that I owe all of the APTC given in 2022. However, before accepting the tax credit, I overestimated what my true income would be. I can’t figure out why I would owe if when given the credit, the estimated income was more than what I truly made?

I hope this makes sense!

OK ... so you got a lower PTC because you estimated that your annual income would be much larger than it really was.  On your 1095-A  are there figures in all 3 columns ?   Did you review your entries in the program ?   Did you verify they are on the form 8962 correctly ?   

If so what are the amounts on the 8962 from lines 5, 7, 8b, 24 thru 29 ?