Here in the north of Belgium masks have to be worn in hospitals, public transport, some homes for the elderly, for the rest you wear it if you like. No PLF anymore.
But for the rest of Europe, you have to check each country as they all have different rules. The countries in the EU still decide.
In Flandres in the north of Belgium the rate of vaccinations is very high (+90 % in rural areas, but in some parts of Europe it is quite another story especially in some of the big cities.
I have a cruise on the 5 th of May from Rome with Nautica and will be checking the rules for every country on the route of the cruise because of possible changes after 30 th april in some countries.
Try to stay safe