Either swipe towards the right and hope that iOS remembers the keyboard position.
Or for Messages app, bring up the keyboard in the app and tap on the grey A icon besides camera to bring up the feature bar. Swipe to find ● ● ● and turn off memoji keyboard in the edit apps menu.
I'm going to defer to people like @nohillside and @Tom Gewecke for internationalization and keyboard setups, but you can rule out a factory reset of Apple bluetooth devices quite quickly assuming you have a Mac computer you can borrow and pair to the keyboard in question.
Enable Bluetooth in the menu bar
Hold Shift and Option keys when you click on ...