Also for clarity ATOL protection is not relevant here. ATOL is to give you financial protection against the insolvency of the provider, it does not provide cancellation rights.

It's the fact that you bought a package holiday under the Package Travel Regulations that is relevant to your query.

People often conflate the two because if buying from the UK a package has to be ATOL protected, but worth noting they are different things. You can also buy flight-only from some providers with ATOL protection, and those don't include package travel rights.