I hope you were joking when you said the flu was more deadly. I am a biological scientist and all the data makes it very clear that COVID-19 is much more deadly than the seasonal flu. The flu typically has a death rate of 0.1% ,in other words one person in a thousand who gets it will die from it.
Exact COVID death rates are still being determined, and of course vary by age group and a person's health. But overall in the U.S., the death rate on REPORTED COVID-19 cases is around 5% so far, or about 50 times greater than the flu. As of today, the CDD reports 2.58 million cases of COVID-19 in the U.S. and that 126,000 have died. Of course more people may have been infected than reported, but it is also believed that more people have died from COVID-19 than has been reported due to similarities to other causes of death.
https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/cases-in-us.html
https://www.livescience.com/new-coronavirus-compare-with-flu.html