Were the Hebrews actually Egyptians

Answer 1

No; DNA analyses have demonstrated that Jews and Egyptians are and were unrelated. The Torah speaks of three branches of post-Flood mankind: Yefet (Jafeth), Ham, and Shem (the three sons of Noah; Genesis ch.10).
The children of Yefet are (broadly speaking) the Europeans.
The children of Ham include the ancient Egyptians, Canaanites, Nubians, Bantu (and sub-Saharan Africans in general), Canaanites and many others.
The children of Shem include the ancient Assyrians, Elamites, Arameans, Lyddians and Semites in general. One group of Semites gave rise to the Arabs, Hebrews, Moabites, Ammonites, Edumeans and others.
Though technically "Hebrews" includes all descendants of Eber (a Semite descendant; see Genesis ch.10-11), today the term is usually used to mean those who would later be called Israelites.
Note that all Israelites are the children of Jacob, grandson of Abraham.

Answer 2

That is not a theory that holds any credibility, and there is really nothing to base it on.

But there is a modern theory that the Hebrews were Canaanites, since Old Canaanite is the same language as Hebrew. According to Jewish tradition, however, the Hebrews (Jews) and Canaanites were unrelated, and modern theorists do not have much to go on.

Answer 3

That is unlikely, but there is a theory that the Hebrews were Canaanites. According to Jewish tradition, however, the Hebrews (Jews) and Canaanites were unrelated.