It's easy to see Egypt as the "bad guy", but I think God has a different perspective. The image of the "mighty hand" and "so I will stretch out my hand" sounds like a father chastising his son.
Joseph brought the children of Israel in to Egypt be a light and to introduce the culture of Abraham, Issac and Jacob, but Egypt as a nation did not listen.
A wise son hears his father's instruction, but a scoffer does not listen to rebuke. Proverbs 13:1
Pharaoh had a chance to allow the sons of Israel to leave to worship God, but he rejected the idea and made the yoke even heavier.
My son, do not reject the discipline of the LORD and do not loathe His rebuke, for the LORD disciplines the one He loves as does a father the son in whom he delights. Proverbs 3:12
The Father was disciplining his son Mitsraim, for mistreating his son Israel!
God dealeth with you as with sons; for what son is he whom the father chasteneth not? But if ye be without chastisement, whereof all are partakers, then are ye bastards, and not sons. Furthermore we have had fathers of our flesh which corrected us, and we gave them reverence: shall we not much rather be in subjection unto the Father of spirits, and live? Hebrews 12:7-9
Someday, once all the nations are chastised, the Almighty Father will bless His children:
“Blessed be Egypt my people, Assyria my handiwork, and Israel my inheritance.” Isaiah 19:25
The Father also refers to Israel and his wive, mostly in the Nebi'yim (the Prophets). Those books are filled with chastisements and warnings of punishment. In my personal studies, I am in Ezekiel at chapter 23. That chapter speaks of Samaria and Jerusalem as whores and specifies their actions very graphically, something like one might find in Tiajuana, Mexico. It contains vocabulary I did not need to know in Hebrew!