The English-speaking world is full of places where it is incredibly expensive to live a decent lifestyle in retirement. Take the same pension that you earned in the Anglophonie and then move to France or Spain or Japan or Taiwan or Mexico and live a comfortable retirement in a supportive community where your friends and family respect your middle-income wisdom and experience.
Or you can stick to the English-speaking world and be faced with the choice of a isolation in a soulless suburb abandoned by work-focused family, emotional abandonment in a nursing home, or paying through the nose for a rare spot in the few community-oriented cities where people of all ages mix the way they do in all other world cultures.
Forget planning your 401(k) and get out those flash cards so you can start practicing.