Do you have figures for that?
Nuclear can be the safest, but it's not the most efficient to build.
This is not at all certain. There are ways of loosening regulations while not making them less safe. Even if there weren't, it is not guaranteed that having less safe regulations would result in less safe nuclear plants. Even if the nuclear plants were less safe[1], there is no guarantee that would result in more incidents.
Edit [1]: meaning they operate under less stringent safety standards and procedures, not a comment on the outcomes
To pick an example that is constantly in the press, Iran having a nuclear program makes people nervous in a way that them having a wind turbine factory or PV fab does not.
also their death toll article.... I mean most russion publications think that chernobyl caused the death of a million people, their article was in "the thousand". of course we can always think nicely about anything and be postivie till the end, however humanity can't work with technologies that causes a huge death toll when it comes to desasters, because the market will always bring us to a desaster.
also the storage of waste is not a problem we can solve. no human lives over a thousand years, thus no storage will ever be safe.
You could additionally push for the adoption of nuclear only in well-developed countries if you were adamant about safety, as in the United States the death toll from nuclear is 0.1 per year.
But the primary benefit of nuclear would be the reduction in CO2 emissions, with the tremendous safety gains being a bonus. If you only cared about reducing CO2 emissions you could have a Chernobyl every year while still being safer and less polluting than coal power.