Thanks, Hanna! You’ll enjoy this video by a German municipality (Stadt Dortmund) promoting their heritage language program!

Your questions and concerns mirror those of Japan’s rep at the League of Nations * who did become one of its Under Secretaries. His visage to this day honours the 10,000 yen bank note, i.e. the incorruptible Quaker and exponent of Bushido – Count Inazo Nitobe:
https://en.wikipedia.org/wiki/International_Committee_on_Intellectual_Cooperation (ICIC)

In this famous photo at table with a youngish Einstein et al (uncommonly absent is Marie Curie, the only woman on the LN’s Language Committee) Inazo appears detached, as in deflated, in the wake of expounding galore on the part of venal academics engaged by the Poincare government to undermine the League’s revolutionary language policy adopted because of WW1’s carnage. Their objective, successfully undertaken until WW2, was to prop up, at the expense of Esperanto, the euphonic French tongue, as the world’s universal language of diplomacy and culture. Deja vu, mon ami.

On outcomes of language pedagogy in China and Japan for a zillion kids struggling with English in expensive schools for three generations since 1945

It’s the same big business hegemony and identically untenable language policy as it ever was in Paris and Geneva, in that Washington, London, Ottawa and Canberra vociferously promote at the United Nations, courtesy of gifted and relatively rare linguists in that organisation’s massive bureaucracy, the absurdly difficult language of Shakespeare. For the parliaments of the world to change today’s language order in favour of an easy auxlang with no colonial-imperial baggage, no weird idiomatic expressions impossible for the masses to absorb, no undecipherable accents and so on, the thought of more conflict as the catalyst for burying Babel is such an unconscionable avenue that Einstein joked about WW4 (sic) being fought with sticks and stones.

At that time of opportunity lost during the birth of the age of consumerism, albeit three wise and kindly voices are strong and in favour of Esperanto at the ICIC’s investigative Committee, on which the language of Voltaire was dominant, the roar of the 1920’s drowns out Curie, Einstein and Nitobe. History repeats? The historic photo above seems to portray Inazo not au fait, not au courant or en accord vis-à-vis his ultra-famous Franco-phonic colleagues at the conference table lapping up the Franco frame-up.

* Though the Japanese were the ANZAC’s allies in WW1, Tokyo was none too impressed with the treatment meted out at Versailles by Australia’s bombastically racist Prime Minister Billy Hughes. As the heads of the allied powers convene for the Paris Peace Conference in 1919 it’s soon apparent that they are not on the same page. That the leaders’ pages were voiced in three separate European tongues, excluding the language of Goethe which is kaputt so to speak, only accentuated their differences. That is to say, the Big Four shared no one language in common and as for their Japanese ally in attendance they grasped not a word.