Brazilian here, to be fair I’ve read so many good tricks here that I am not sure what I have to contribute, but yeah, light clothes with bright colours or white, don’t dress dark as your clothes you heat up. No shoes if you can, but also not barefeet lol sandals and flip flops havaianas styles. If you live close to the beach obviously go take a swim, otherwise swimming pool or AC at home or car or go to store random stores with AC too lol. Drink cold stuff, keep hydrated. Fans, and cold shower.