In Brazil, mayors, governors and president have the right of one consecutive reelection since 1998. (Such right is being reviewed at Congress right now, but it is not relevant to this question). As elections to governors and president happen simultaneously each 4 years, there have been 6 elections since then (1998, 2002, 2006, 2010, 2014, 2018).
The Rio Grande do Sul state (with ~11 million people) is the only one that never reelected its governor. As a comparison, similar to the US, the last 3 presidents with this opportunity were reelected (Fernando Henrique Cardoso in 1998, Lula da Silva in 2006, and Dilma Rousseff in 2014).
So, is there another similar experience around the world (i.e., a state or country that, given the right, refused to reelect its previous governor or president 6 or more consecutive times)?