Hey,
I think your dad is dangerous to your brain with his "really strong" arguments. Pls get the vaccine and dont spread conspiracy theories that are against the narrativ of the mainstream. There was never ever a time in history were the mainstream narrativ was wrong or were the big pharma made billions of dollars by damaging people.
I would say to your dad as following:
"Dad, i know that the vaccine are not tested and highly experimental and the few clinical trials are more than questionable BUT im a part of an open minded community and they need to be right dad! Im going to get the shot and ask questions about the huge censorship around the negative side effects later"