Is it better to get natural immunity to  COVID-19 rather than immunity from a vaccine?

No. It is not known how long protection lasts for those who get infected or for those who are vaccinated. What we do know is that COVID-19 has caused very serious illness and death for over 2.6 million people worldwide. If you get COVID-19, you also risk giving it to loved ones who may get very sick. Getting a COVID-19 vaccine is a safer choice.