Not really, I think you confusing him with Lula da Silva. Petro was elected as a leftist (SocDem/Democratic socialism, he used to be a M-19 guerrila fighter, a guerrila that followed Rojismo, which is the ideology based on the ideas of former Military Dictator of Colombia, Gustavo Rojas, it's basically a left-wing nationalist social democracy but with some socially conservative ideas bc he had military reactionary brainworms).
Petro usually promote more leftist policies, but he lacks support in congress, and sometimes the supreme court strikes down or reverses his reforms and laws. But different from Lula da Silva, who basically buys votes in congress to pass leftist reforms/laws (sometimes, other times Lula push for neoliberal stuff), Petro usually lets his voter base pressure the Supreme Court and Congress into voting in favor of left-wing policies.
My uncle died bc of this cancer, horrible way to die. Can't say I feel sorry for Biden, he had the chance to stop the genocide in Palestine, stop the war in Ukraine, and arrest Donald Trump, he didn't do any of that and instead continued to arm Israel and Ukraine, and gave the republicans all they wanted to elect the Orange guy.