Ethnicity question

[HarrysMum]

On Ancestry I have 44% Irish and Scottish.
My grandfather came from Irish stock through and through. My grandmother’s father was Scottish highlands through and through.

6% German.......my great grandmother was German.

3% Icelandic region. I know one was a Viking so presume that is where that bit came in.

1% Baltic

46% East of England, Mostly Essex. My great grandfather was from an Essex family.

My great grandmother, his wife, was from Cornwall for many generations.
Another great grandfather was Devon way back to Sir John Hawkins.

Why are those areas not showing in my DNA?