Consider your sources. There are a number anti-vax disinformation websites (some at /s/shitpostnews) that are devoted to spreading lies. For reliable information on some of the problems see medical journals via PubMed &c (eg. re. blood clots in 2 or 3 dozen younger people that were easily treated and the that AZ vaccine removed from administration for younger people). Contrast those reports of - say - a few dozen people at most, with 8 billion doses administered. No one died. The clots were easily treated with blood thinners. And it is not known if the vaccine was the direct cause.