Regional format options limited

Hello
I cannot change Windows settings regional format option to anything other than English (United States) and I need to change it to a country of Europe for remote work applications to work. How can I find and change it to my country? I have tried changing language first, but it still did not give me the options I need. Any advice would be helpful.
Thanks in advance

 

Hello, please follow the below instructions and check, thanks

1. Select Start > Settings > Time & language > Language & region.
2. Choose a language from the Add a language list under Preferred languages, and then select Options.
3. Select Download from the Download language pack option.
4. After the language pack is installed, select Back.
5. Choose a language from the Windows display language menu.