Is It Too Much to Bear or Bare?

The correct phrase is “too much to bear.”
The word “bear”(e.g., “The loss was too much to bear”) in this context means to endure or tolerate.
“Bare”(e.g., “He bared his teeth”) means uncovered or exposed, which doesn’t fit the expression.

So, if something is overwhelming or difficult to handle, you’d say it’s “too much to bear.”