My goal is not really to turn this into a discussion, but I feel like your concerns might be based on common misconceptions about nuclear energy.
Chornobyl (Ukrainian spelling) was such a big disaster because it was the first major nuclear disaster. The reactor was built without hands-on experience with the consequences of a nuclear disaster driving the design of the facility itself. We have since learnt a lot about proper design of nuclear reactors and about how to respond to any incidents.
The Fukushima reactor was designed with that knowledge in mind, but the event was a perfect shitstorm consisting of both an earthquake and a tsunami hitting the facility at the same time. And even though the local population might disagree, the disaster was arguably less serious than Chornobyl was. Due in large part to a better design and proper disaster response.
We're more capable than ever of modeling and simulating natural disasters, so I'd argue we acutally CAN plan for most of those. Any disaster we can't plan for nowadays is likely to also fuck up an area even worse than the resulting nuclear disaster would.
But probably the most important thing to mention is that nuclear power is a lot more diverse in the modern world. Gone are the days that uranium fission reactors are the norm. They were only popular because they serve a secondary purpose of creating resources for nuclear weapons, in addition to their power generation. With molten salt reactors, thorium-based reactors and SMR (small modular reactors) there's really not a good reason to build any more "classic" nuclear reactors other than continuing the production of nuclear weapons, which I hope we can just stop doing.
The best way to prevent large scale incidents is to prevent large scale reactors, which is why there's so much interest in SMR lately.
All in all, we likely can't fully transition to renewables fast enough without the use of nuclear power as an intermediary. But the actual dangers with modern designs are far fewer than they used to be and we should take care not to give in to irrational fears too much.
To put things into perspective: We currently have no way of stopping a major solar storm that would thouroughly disrupt all modern life, nor can we stop large asteroids heading our way. Both are potentially planet-ending disasters, but the possibility that they might occur doesn't stop us from trying to build a better earth for the future, right?