The COVID virus may come back in 3 waves (based on Spanish flu)

Please note I am using the TradingView Confirmed TOTAL COVID data line and then projecting how I think COVID will progress using the Spanish Flu as precedence - I am also assuming there will be no vaccine at least till next summer:


I have tried to keep this analysis/projection simple using two estimates:

1) Looking at how the Spanish flu happened in 3 waves and the time frame in which that happened;

2) Looking at the direction of the exponential increase in confirmed cases globally.