There has been a chart circulated on X that purports to show that the mortality rate from flu went down prior to the influenza vaccine, and the vaccine had no effect on mortality. But that is now what the data shows.
The blue line is deaths per 100,000 due to influenza and pneumonia. The orange line is % of the population that has been vaccinated.

Data
Year Deaths per 100,000 % Vaccinated
1950 31 1
1960 25.5 2
1970 21.8 5
1980 18.2 10
1990 17.1 25
2000 17.8 35
2010 15.1 41
2020 13 50
2021 12.5 49
2022 11.3 47
2023 10.9 49