Navalny is insignificant in Russia. You can compare him to those shit stirrer in HK years back, funded by the Americans. Did someone ask for proof? Sorry you won't get it. Because whatever proof furnished to you will be dismissed as propaganda. It's like Nordstream bombing, no one's gonna send you a 562 page document detailing how the Americans carried out the bombing... because you will rubbish it. Anyone with an objective mind knows that US has been using this strategy for 200+ years.
So Navalny's death serves as a good reminder to the rests. There are probably hundreds more Navalnies in Russia and they will be meet the same end. I suspect many are already scurrying to get out.