Is the use of 'in where' correct and natural in the following sentence?
In where I live, people usually eat with their bare hands. (This is not the case. Just an example sentence.)
Is the use of 'in where' correct and natural in the following sentence?
In where I live, people usually eat with their bare hands. (This is not the case. Just an example sentence.)
No. That's neither correct nor natural. We would probably say,
"Where I live, people usually eat with their bare hands."
You might be thinking of in which. In formal English we might say,
"The town in which I was born had no hospital."
But generally we say, "The town where I was born..." or, informally, "The town I was born in..."
"Where" already incorporates the "in" meaning, so there is no need to repeat it.
You need either "where I live, people usually eat with their bare hands." or "In the (place or something) where I live, people usually eat with their bare hands."