What happens if I lose Bitcoin Investment, is there Bitcoin insurance?
So far as I am aware, no currency, whether fiat or cryptocurrency offers intrinsic insurance against accidental loss of cash.
For example is a shopkeeper takes dollar bills from their cash register and drops it unnoticed in the street on the way to the bank, they will not be covered for that loss by the US treasury. The shopkeeper will only be covered by any relevant insurance whose cover includes that kind of loss.
Bitcoin insurance exists in the same way that dollar insurance exists for cash.
Bitcoin was designed to do away with trusted third parties such as banks therefore there is no need for government organised recompense for bank failure.