I used to be a Brave browser exclusive user for months and then my laptop broke. All I could afford to replace it with is a Chromebook. So I downloaded the version for Chromebooks. It’s not easy to use. It flickers a lot, the side scrolling by up/down bar doesn’t work a lot of the time and youtube doesnt work if you’re using another tab in the same window. I don’t fully understand the situation but I think Google is getting rid of support for Chrome OS apps and you’ll just have to use the playstore and that’s how I got the Brave browser on my device. I don’t know if you can make a Brave browser meant for Chrome OS bc of the phasing it out thing but it would be nice if you could make a Brave browser meant for Chrome OS that’s more like the desktop experience.
Try this on your Chromebook: https://www.linuxmadesimple.info/2020/03/how-to-install-brave-browser-on.html
You will be much happier then, I believe.