It's possible to download APK files for apps that are not available in your country. They are typically not restricted by geographical location, so you should be able to download an APK file for an app that is not available in your country as long as you have a reliable source.
However, it is important to be aware that some apps may not function properly if they are not used in the country for which they were designed. This can be due to differences in language, currency, or other factors.