Lets assume you feel like vaccines are potentially harmful for your health, then you should not seek out confirmation bias that confirms those fears, but actually try to disprove your own concerns via research. Which I did for myself and vaccines are not the devil the way they are made out to be. I can encourage anyone to actually read the scientic data and studies. It's very interesting. And something only you yourself should do, you shouldn't even listen to me, but i do suggest try to disprove your own fears.