polish fonts i lubuntu

I will install lubuntu on 21.10 amd.64 because I live in Poland, I would like to use Polish labels. Unfortunately, despite setting the Polish language in firefox, I cannot see 2 characters correctly.
expansion of the letters a and e and o.
I see ŏ and ã ô. I can’t even show what these letters look like because they don’t work. Other signs, such as deer łśćń , work in opposition.
Can you help mi

fonts a i o in extension version
skorka i maka

Do you have the packages language-pack-pl and firefox-locale-pl?

Maybe it is a problem with the installed font?

Otherwise you could ask in the #ubuntu-pl channel on https://libera.chat (IRC).

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