There will never be a completely risk free answer to anything in life.And you alone personally know what the long-term side effects will be ? That would be a neat trick.
The odds are hugely in favour of being vaccinated.
And not just for the personal gain but also for the need to stop the virus from spreading with new mutations.
NO, I don't know the long term effects of being vaccinated, but science is telling us their predictions of the long term effects of not being vaccinated.