In Brazil there is only online gambling, so all stats are about this. The exception is some offline games in smaller communities like Jogo do Bicho, but the percentage is smaller compared to slots online.

Data says that 23 million brazilians bet on online websites, that is 15% of the population: https://valorinveste.globo.com/educacao-financeira/noticia/2025/04/30/cerca-de-23-milhoes-de-brasileiros-apostam-em-bets-mais-do-que-compram-cdbs-e-bolsa.ghtml