You’re expecting the main opposition - the communist party - to beat him then? Zyuganov?
If that fantasy happened it would split the communist party between the half that is controlled opposition who would see it as “the wrong time” for it to happen and the half who truly want socialist power again. The election would then be redone with a 3 way split between the two factions and Navalny’s fascist coalition supported by the euro liberals.
I mean, I would want that outcome as it would result in a real left communist opposition emerging but I think it’s incredibly unrealistic. Not to mention that you’re expecting the population to boot a leader during the middle of a war? I am not sure how often that has happened, populations understand you keep the same leader during wartime. You would need the population to become against the war for that to occur and uhhh I hate to break it to you but absolutely the support the war and it would take a huge change in the frontline situation to change that - one that I do not think is coming judging by the failures of the counter offensive so far.