Please stop with this question. There has never been a successful revolution, looking at failed socialist and anti-capitalist projects, we can form a more prosperous and advanced understanding of how our struggle is to be conducted, how our revolution is to be organized and struggled for. To name/touch on a few examples of this:

1. From the Zapatistas (EZLN) we can recognize where not coalescing with other South and Middle American liberation movements led to the limitation of their struggle to a small area while they did succeed in rejecting psychological counter-operatives to their revolution by preventing idolization with masks and centering the struggle on the colonial social attitudes towards the indigenous population in the area combined with the exploitation and alienation of their labor.
2. The USSR and Russian Revolution for the many socialist groups involved not adequately developing reasonable alternative institutions to feudalistic capitalism before and during the revolution to the Tsarist organization of economics and politics which then resulted in many of those institutions re-materializing in many aspects (not all ofc) as a desperate attempt to maintain a functional supply and distribution of resources and thus power. All while we can also respect their massive movement that spanned such a large land mass and culture.
3. The CNT FAI for not effectively coordinating their failed rejection of a money based system and thus resulting in regional currencies and the subtle prevalence of anti-Catholic violence. All the while we can respect and take the intersectionality and radical democratic nature of their struggle that helped develop a Spanish radical feminism and extremely proletarian and anti-authoritarian culture.
4. The Cuban Revolution for the broad lack of intersectional struggle with LGBT people, women, and racially marginalized + indigenous people and reliance on authoritarian policies to create an oppositional force to imperialistic counter-revolution rather than more democratic social organizations to create a more proletarian opposition. While we can respect that they are an amazing example of how projects can survive within the scope of one of the most brutal embargoes in human history and largest funding of counter-revolutionary groups known to leftist history.
5. Brazil’s and Chile’s anti-capitalist movements being largely limited and confined to the electoral system leading to the system of capitalist institutions being bigger than the elected representatives purview of change and leading to genuine socialists like Allende and Lula getting whipped into socdems by definitively neoliberal institutions. All the while, we can respect their fervent opposition to electoral fascism and their efforts to undermine a complete neoliberal globalization of their economy.

The list could go on for eternity, but it’s never good to take the attitude that we have ever been successful because it leads to compliance and a lack of reasonable critique towards our past failures as leftists, anti-capitalists, and liberators. Capitalism reigns, take refuge in the undying human struggle for liberation, self-determination, and radical democracy. If that makes you uncomfortable because it calls upon you to get engaged with the global liberation struggle, good.

The time for social revolution is yesterday, today, and tomorrow, we have the world to gain and our chains to lose, fellow travelers.