Well, for what I red, Einstein primary language stayed German all life through (Information/Informationen). And he learned English rather late in life, starting at 34 apparently.[1] And while not speaking German, he was more likely to practice some Italian as a spontaneous expression desire (informazione/informazioni) and did practice French well enough to give a lecture in this latter language (information/informations).

[1] https://www.lingalot.com/what-languages-did-albert-einstein-...