2- Sorry you’re unlucky. But even fully vaccinated people there are going to be cases like this. Such is life.
It's a game of chance.
Digressing, some people suffer much more than others from the vaccines, and ditto from the disease. I've wondered whether they're the same. Is it the same unknown factor at work? Does suffering for days from the vaccines mean that you're someone who'd suffer for months from the disease, or even die?
https://www.medicalnewstoday.com/articles/covid-19-vaccine-i...
Consider two possibilities, both fairly remote and I have absolutely no reason to believe that they're real.
First, suppose that the people who suffer badly from the vaccines/virus do so 100% because of some factor that comes and goes, such as having slept badly. In this case, suffering badly from a vaccine does not mean that you would suffer badly from the disease.
Second, suppose that the people who suffer badly do so 100% because of some genetic factor, such as having a single gene for a particular recessive disease. In this case, if you suffer badly from a vaccine it means that you've saved yourself even worse suffering when the disease finally finds you.