Yes, this one could have been a lot worse. The next one could be just as infectious but 100 times more lethal.
There will be a next one soon unless the world changes its ways.
But there is no case for saying the next one . The last serious virus that existed came from China , happened to be a respiratory one as well, within 20 years, if you want a conspiracy theory.
But generally if you go on the basis that viruses aren't man made and go in the face of the conspiracy theory and more on the direct knowledge. We can't avoid it , without making us all sick or shut down modern life.
If covid-19 just happened and was a just freak happening then how could you defend against it? There is no defence unless you have a cure. You will never have a cure at first so you can't defend against it. Simply reacting well solves the problem.
The world can't help it if a virus suddenly appears , we can't control that. All we can do is learn and have measure in place to restrict one in the future.
We are contributing to many different problems on the planet but as for pandemic level viruses, that's unpreventable naturally