The Canadians have looked fairly hard into vaccines and suspected related deaths and found uncertainty.
Perhaps the best way to proceed is to autopsy all people aged 20-29 who die within a month of a month of vaccination, saving all blood clots and heart muscle and nerve samples.
There is the blood clot issue, but also the auto immune deficiency issue that could be increasing deaths due to cancer and other diseases.
Also, don’t forget, if you die within two weeks of the jab, you are unvaccinated.
Probably the best measure of Covid/vaccination deaths would be the increase in actual versus expected mortality. There will always be uncertainty about if the vaccine or Covid caused the extra deaths.