That is what I would bring me to accepting it (which it has) and general consensus by many different people around the world including governments.
I presented the consensus as evidence but they said that the doctors could be lying.
They could be lying. I don't think anyone is lying about the disease itself. However, some have charged that society is overreacting to it all, and they might cite the fact that millions die from the flu every year without causing a societal shutdown. So, we have evidence that many more people are dying from the flu, yet we don't shut things down for that, but we're shutting things down for the coronavirus which has fewer deaths.
That's where it takes some convincing and more evidence to persuade people, and that's where part of the current dilemma is at. That's where the dispute seems to be, not about the claims of the disease itself.