Can I apply for a 30-day extension or the Covid extension on my visa-exempt stamp before it expires?

The user is inquiring about applying for a 30-day extension on their visa-exempt stamp which expires on June 9, and if they can subsequently apply for the Covid extension. Responses indicate that the 30-day extension is necessary before applying for the Covid extension. Additionally, the availability of the Covid extension may vary depending on the immigration office's policies in the user's location.