Democratic rule in Latin America

Why has democratic rule remained fragile and precarious in Latin America? What are the conditions that lead to non-democratic governance, such as populism and militarism?
You can use any source(s), this are the ones that I found that could be helpful:

https://www.idea.int/sites/default/files/publications/the-quality-of-democracies-in-latin-america.pdf
https://muse.jhu.edu/article/753199
https://muse.jhu.edu/article/16650

Ribeiro Hoffman, “Brazil under Bolsonaro,” Latin American Policy (2020)

Sample Solution