Flagship means The best or most important thing owned or produced by a particular organization“. so it differs year by year, A50s is a good flagship killer may be.
Flagship phones in Samsung are S series and Note series phones. like S10 or S10+ and Note 10 and Note 10+. Hope you have got your answers. and also your phone A50S is a good phone and one of the best in this category. don't worry.
