Is Covid-19 a natural disaster?

I lost my job in 2020. Im still on unemployment at the end of 2021. Does Covid-19 count as a natural disaster which caused me loss of income? Did 2020's stimulus check count as the only credit due for 2020, and more importantly, is there anything I should do on my taxes for 2021 tax year? I want to make sure i get whatever i may be allowed, but the extended unemployment may be all im.entitled to.