The good news is that the Namibian Government has agreed to open the borders for citizens of certain countries as of today, 03 August.
Visitors must present proof of a negative COVID-19 test completed within 72 hours prior to arrival in Namibia. Upon landing, they are required to complete a seven-day fixed stay at a government approved quarantine lodge, hotel or guest house. They will be tested again after 5 days and when they test negative, they can proceed.
Check to see if your country is under the allowed countries.
Welcome back to Namibia.