@MasterLink is correct … and I already forgot what I found a few days ago:
Unfortunately, June 23, 2025:
“Chrome 139 (tentatively scheduled for release on August 5th, 2025) is the first version of Chrome that requires Android 10.0 or later. You’ll need to ensure your device is running Android 10.0 or later to continue receiving future Chrome releases.”
" Older versions of Chrome will continue to work, but there will be no further updates released for users on these operating systems. If you are currently on Android 8.0 or Android 9.0, we encourage you to move to a supported Android 10.0 version (or newer) to ensure you continue to receive the latest security updates and Chrome features."
- Ellen, Chrome Support Manager
But, if you somehow update Android …
See: ‘Direct download of Brave Browser stable release version - #2 by 289wk’
Scroll down to info re Android, to be sure about device architecture and instruction set.
Then visit: ‘https://github.com/brave/brave-browser/blob/master/CHANGELOG_DESKTOP.md’
Select the latest Brave Browser version number ← click on that (currently v1.89.143).
Then scroll down to the APK suitable for the device’s architecture and instruction set.