The rule of thumb is

1 - Airline cancels you get a refund

2 - You cancel and you don't want to travel you are reliant on airlines offering voucher / credit note


The fact that a country is denying passengers from another entry does not give you the right to a refund if the flight still operates.

There is a whole thread with others experiences of ryanair refunds

https://www.flyertalk.com/forum/othe...ir-thread.html