You can pick up private English students in Brazil fairly easily, particularly if you’re already teaching English and have starting to build up contacts. Most of your students will be adults looking to extend their skills but you may find some children who want to have extra English lessons too.
Private tuition tends to pay better than language centres, with fees of up to double the wage you could earn in a language centre. As a result, many TEFL teachers take on a few private students initially to top up their wages and then move over to this full-time, if they continue to teach English in Brazil for a longer period.