you could boycott for instance the bank 'Deutsche Bank'. They said on twitter (in german) that Bolsonaro is the ideal kandidate.
You could also buy fairtrade coffee & nuts, because they usually have special contracts with local farmers, making their life a little more pleasant.
in general, you should probably fight for your democracy and for instance investigative journalism - for instance, Glenn Greenwald.
Both are very important in fighting against bolsonaro, as they can reveal economic cooperations with other countries.
The population of democracies usually like human rights. Therefore, i think, you can make human rights as a condition for further economic cooperations. At least, if you can draw attention to the topic.
I think you should probably also fight the economic force of growth wherever you can.
I think that is also one core reason why the "deutsche bank" is successful. It is profitable to violate human rights and destroy the environment and the climate.
That means, if you can change your country that local companies are interested in respecting human rights, the environment, the climate and animal rights - then those companies will also influence the global market.
Mastodon instance for Extinction Rebellion