It is not the vaccine, because the left never made mistakes   

Cite your source. If you can't, your post is unsubstantiated and anti-vaxxer propaganda.

According to officials Irish Government figures, just after COVID vaccine injections hit their peak, Ireland started suffered its highest death rate.

Proximity is not causation. For instance in your example the time between "COVID vaccine injections hit their peak" even if accurate could reflect infections in place but not yet symptomatic at the time of vaccinations and later illness.

What is proven is that vaccinations reduce severity and hospitalizations by 73%. Not a perfect protection, but I will take reducing risk of hospiotalization by 73% over no protection.