These studies don’t compare outcomes between vaccinated and non-vaccinated. If you don’t see that, I can’t help you. But also, yes, I’m highly suspicious of so called scientific studies. It is a known fact that pharmaceutical companies pay “scientists” to create “studies” to support selling their products. Something like 70% of studies are not even reproducible:

“More than 70% of researchers have tried and failed to reproduce another scientist's experiments, and more than half have failed to reproduce their own.”