Okay. Thanks for the clarification.
Now, I ask you this: which Gods were being humiliated?
1) The first plague was turning the Nile River into blood. By reason of this miracle, Pharaoh and his people learned that Jehovah was superior to the Nile-god, Hapi. The death of fish in the Nile was also a blow to Egyptian religion, for certain kinds of fish were venerated.
2) Next, Jehovah brought a plague of frogs upon Egypt. This discredited the Egyptian frog-goddess, Heqt. (Exodus 8:5-14)
3) The third plague confounded the magic-practicing priests, who were unable to duplicate Jehovah’s miracle of turning dust into gnats. The Egyptian god Thoth, credited with the invention of magical arts, was unable to help those charlatans.
4) During the fourth plague, gadflies ruined the land, invaded houses, and probably swarmed through the air, which was itself an object of worship personified in the god Shu or in the goddess Isis, queen of heaven.
The Hebrew word for this insect has sometimes been rendered “gadfly,” “dog fly,” and “beetle.” (New World Translation; Septuagint; Young) If the scarab beetle was involved, the Egyptians were plagued by insects they considered sacred, and people could not have walked about without crushing them underfoot.
5) The fifth plague was a pestilence upon Egyptian livestock. This blow disgraced Hathor, Apis, and the cow-bodied sky-goddess Nut. (Exodus 9:1-7)
6) The sixth plague brought boils upon man and beast, humiliating the deities Thoth, Isis, and Ptah, wrongly accredited with healing abilities. (Exodus 9:8-11)
7) The seventh plague was heavy hail, with fire quivering among the hailstones. This blow shamed the god Reshpu, supposed master of lightning, and Thoth, said to preside over rain and thunder. (Exodus 9:22-26)
8) The eighth blow, a locust plague, showed Jehovah’s superiority over the fertility god Min, supposedly the protector of crops. (Exodus 10:12-15)
9) The ninth blow, a three-day darkness over Egypt, poured contempt on such Egyptian deities as the sun-gods Ra and Horus. (Exodus 10:21-23)
10) As already mentioned was a blow to the Pharaoh god himself...supposedly the son of Ra.
And yet such humiliating defeats and episodes were still recorded in other nations, including Egypt. IIRC, the whole episode with Akhenaten was regarded as a complete embarassment, to the point where his son (the famous Tutankhamen) reinstated polytheism and then subsequently buried in a hastily-built tomb.
Perhaps Egypt's pride was not the sort you assume it was. Remember, by the time Moses supposedly lived, Kemet had existed for 1500 years already. In fact, the Great Pyramid of Giza would have already been built, and stood for a thousand years before Moses ever showed up.
That's a pride that can be backed. That's pride that's not easily hurt or broken by one or two failures, no matter how drastic.
Egyptians were not not nice people by all accounts. Because the Hebrews were increasing in numbers, according to scripture, it was decreed that all male infants be put to death. Moses survived that threat and was raised in Pharaoh's own household. ...but he never forgot who he was. Despite justifiably killing an Egyptian guard who was beating one of his brothers, this "son of Pharaoh's daughter" would still face the death penalty and had to flee. He didn't return to Egypt for 40 years....sent by God to liberate Abraham's offspring, now perhaps numbering into the millions.
Yes, we do, in fact. As I keep reiterating, Egypt has a reputation for being METICULOUS. We know quite a lot about their history. Far more, in fact, than we do about the histories of several other great cultures.
Now, you posit that a "more valient reason" may have been given in these records? Then you admit that this Pharaoh in question is named in the records.
Now I challenge you: name the Pharaoh. I've named three. What have you go?
I was presenting a likely scenario, not a factual historical account. The Bible does not provide the detail. So I'll leave that to you.