If that's the issues I wonder why nothing happens to the US president and other people we saw on TV took the vaccine or there's something more to the vaccine they took and the one give out to the masses cause the government can be weird sometimes which is the reason why I don't totally trust them.
Note that the efficiency of the vaccines not all of them are 100% but at least they can be effective in most of the people. But there's those cases that it's not effective in some.
I've even heard in the news that even after taking the vaccine, they were still able to get covid19 despite being vaccinated.
Well that is effectivity for you, cause there are many other factors to be considered that is not yet researched because of the limited amount of time. Nonetheless, as Tabas said, Even if you caught Covid after having the vaccine, the effects can't be worse, and it is like a regulard cold even though it is covid. And pretty much you won't even feel sick or tired or even loss your taste.