Samsung keyboard shows too many language-specific letter variants

I have Samsung Galaxy S25. I decided to give default Samsung Keyboard a try (I previously used SwiftKey). I type in Polish and English. When long pressing a letter (eg 'a') I expect to choose a single alternative symbol ('!' in this case) and polish letters derived from 'a' ('ą'). Instead I get 1 expectedy symbol, 1 expected polish letter and 10 different a-adjacent characters to choose from, from (I guess) all the languages in the world. How do I make the keyboard to propose ONLY polish letters (and a symbol)?