The beast only has seven heads in total, and only one deadly wound received, John repeated the same thing several time for emphasis, you on the other hand was just making stuffs up.
The angels say the entire beast is the "eighth head":
9 "Here is the mind which has wisdom: The seven heads are seven mountains on which the woman sits.
10 "There are also seven kings. Five have fallen, one is, and the other has not yet come. And when he comes, he must continue a short time.
11 "And the beast that was, and is not, is himself also the eighth, and is of the seven, and is going to perdition.
(Rev. 17:9-11 NKJ)
You still miss the key Daniel gave, to interpret this. Some equivocation occurs with the word "head" and "beast", these can refer to kindgom or king ruling it. That's why the two horned beast (Britain and America) is called "the false prophet" because they unite under one leader.
Its also why a head can die from a mortal wound, but the beast government that is struck by a sword (warfare) can survive it without a healing. Context indicates whether king or kingdom is meant. The entire seven headed beast with 10 horns and blasphemous mouth, that ends up in the lake of fire, is the Antichrist Beast, the king ruling the eighth kingdom. He is also called a horn in Daniel. Context must be carefully followed to know precisely what the symbolism is referring to.
Confirming this, the Dragon has seven heads and ten horns. That symbolizes these are govenments and kings through which he works, deceiving the earth since the Tower of Babel. Perhaps you don't now, literally its the Tower of Babylon, and that is why we see the Harlot Babylon return, the mother of harlots. That's where all false religion had its start, in the Tower of Babylon. They were scattered throughout the earth taking elements of Babylonian religion with them.