why would vaccines reduce life expectancy?

Edit: googled that negative efficacy in vaccines for you, apparently is all deeply misleading reports that ignore all the confounding data that also effects infection rates and the nature of vaccine administration, like people getting the vaccine the same day they are in the hospital with the infection are marked as 'vaccinated' in the data even thought that's incredibly misleading to think they got infective while vaccinated, but I'm guessing these procedures were established before people with no medical education or experience were trying to process all this data to support their already arrived at conclusions. Also infection rates aren't the entire point of vaccines nor have they ever been, we've known all along that getting a vaccine can give you symptoms if the illness they innoculate you for, and that you can get a milder version of the illness, it was never a prefect drug ment to fully prevent an illness, that data clearly shows vaccines reduce infection rate, and also reduce symptoms of you do get the illness, and reduce your ability to spread the illness and the strength of the illness you spread, there's a lot of reasons vaccines are effective not just one, and vaccines can't stop you from behaving in ways that can get you infected like ignoring safety steps, social distancing, masking, and all that. yes getting vaccinating, then walking around with no mask or pulling it down below your nose like a jackass is going to lead to infection just like not getting a vaccine. why when it comes to Covid everyone decided vaccines were supposed to be a magic cure? no vaccine has ever worked that way and no one claimed they could.