Maybe. But an acquaintance of mine, 32 years old, came back from South America not feeling her best. She was very athletic and went out for her daily run, collapsed, and died. According to what her father told me, the cause of death was never determined. That was about 15 years ago.
Stories like yours certainly did used to happen, but they were rare. Now practically every day there’s a similar story. If their rate suddenly increased a factor of 100 or 1000, shortly after the vaccines were rolled out, and if the great majority of those suddenly dying were vaccinated, the hypothesis sort of suggests itself ... except to the woke.