I am not saying that there won't be examples of what you highlighted being cause by the Covid dose, but just think about what you are implying for a minute. If your logic "the vaccine overloaded the body and that led to death", were true then there would be literally millions of people dying after vaccination. According to the Google News website, there are currently 374 million confirmed cases of Covid, 5.6 million deaths and 10 billion vaccine doses administered. Say 10 Billion doses slowly. 10 Billion chances of overloading a body. If there was any truth in your "thinking out loud", there would be so many people dying we would need mass graves.