Recent article on him in the London Review of Books, exploring his rightward turn as he grew older: https://www.lrb.co.uk/the-paper/v47/n05/tony-wood/why-did-he...
Fairly biased article: “In 2018, he celebrated Lula’s imprisonment in Brazil on dubious corruption charges, and the following year exulted in the right-wing coup that deposed Evo Morales in Bolivia. Since then he has voiced his support for far-right candidates such as José Antonio Kast in Chile and Jair Bolsonaro in Brazil…” “Dubious” charges against Lula? — He was convicted of accepting a seaside apartment as a brib…
And just because you're opposing a far right extremist like Bolsanaro doesn't make you a far left politician. For example, Le Pen is a far right extremist politician, but Macron is definitely not far left (though Jean-Luc Melanchon, the third place in the previous election, could rightly be called a far left candidate).