UPDATE: The campaign to have Alita: Battle Angel’s blu-rays distributed in Brazil has been a success. See the news here: https://alitaarmy.org/2020/08/01/blogdojotace-finally-alita-battle-angel-favorite-on-dvd-and-blu-ray-in-brazil/
Sign the petition to get Alita: Battle Angel Blu-rays released in Brazil:

From the petition description, written by Matheus Simon (translated):
Unfortunately the release of Alita: Combat Angel’s DVD, Blu-ray or Steelbook did not come to Brazil and has no release date here, since the film launched in 2019 in theaters and also in various media.
There is a large (paying) audience of fans and collectors of the current “Blu-ray” media (audio and video in high definition) who wish to have this film on physical (and not digital) media, we would like to ask any producer for the possibility of launch Blu-ray in Brazil, with a smaller or limited edition (500 to 1 thousand copies) for fans and media collectors. The movie in theaters, the sales of DVD and Blu-ray in other countries and all the other official products were a huge success, it would be a sadness not to have this incredible HD movie here in Brazil.
From @AlitaBrasil:

Ajude os fãs brasileiros de Alita! 🇧🇷
Horário: terça, 9 de junho de 2020 às 09h da manhã (horário de Brasília)
Hashtag: #AlitaBlurayBrazil
Objetivo: Lançar os Blu-rays da Alita no Brasil.
Instruções: Marque a @CinecolorB e @20thcenturyBR com a hashtag e faça o pedido
TRANSLATED:
Help Alita’s Brazilian fans!
Time: Tuesday, June 9, 2020 at 9 am (Brasília time)
Hashtag: #AlitaBlurayBrazil
Objective: Launch Alita’s Blu-rays in Brazil.
Instructions: Tag @CinecolorB and @20thcenturyBR with the hashtag and place the order
Countdown: