I use SwiftKey which lets me have up to 5 languages. The main keyboard I keep multilingual English/Spanish/Esperanto. The others rotate as needed (usually only briefly) among the other languages I have installed: Japanese, Chinese, Russian, Greek, Hebrew (listed roughly in frequency of use order).
Comments
Norwegian
Greek
Hebrew
Danish
Greek
but to be clear I use the 'merican version of 2 languages.
And my phone randomly shifts from one to another for no apparent reason.
Emoji
Bitmoji
Tenor (gifs)
Greek