Greetings,
Cameras don't typically change display language unless selected.
If the camera was stored correctly without a battery installed for an extended period and the internal battery also depleted, it's possible you would loose language, date and time.
Try pressing the Menu button, then navigate to the Settings Menu (Wrench Icon). Scroll down and look for Language. You may have to use a translator app if it's in Slavic 😉. Select English and then press Set.
This should help.
https://support.usa.canon.com/kb/s/article/ART173263
Good luck! Let us know if you need any help.
~Rick
Bay Area - CA
~R5 C (1.1.2.1), ~R50v (1.1.1) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, ~RF 200-800 +RF 1.4x TC, BG-R10, 430EX III-RT ~DxO PhotoLab Elite ~DaVinci Resolve Studio ~ImageClass MF644Cdw/MF656Cdw ~Pixel 8 ~CarePaks Are Worth It
