I think vaccines do sometimes cause injury, your sister being a case in point. But I also think Covid poses a greater risk of injury and death. And I haven't seen any real proof that vaccines cause death, your overheated and one-sided topic here notwithstanding.
These "mysterious" deaths of young people, including athletes, have always happened; it's just that a certain agenda is at play to bring them to the forefront so gullible people think it's something new. And I also note that outright lies are being told about these people who've died in order to push the narrative that it's the vaccine that caused their death.
If you were so good at research, so good at questioning what you are being told, and so impartial as you'd like to believe, you wouldn't post half the crap you do.