3 years lockdown

Does anyone have an idea what happens in North Korea these days? Mainstream media says that people there are having a hard time because the country has been under covid lockdown for over 3 years now and that Kim warns another famine like in the 90's.
But I would like to watch some alternative sources if there are any as mainstream media isn't so trustworthy when it comes to stories about north korea.

Why does the government keep the borders closed?