@HipClipOne
Online, search for “Chrome Helper process MacOS”.
You might find a tip on how to disable Notifications for it, and then use the same steps for “Brave Browser Helper”.
I found what might apply - MAYBE (says “google-chrome-helper-app”) - for Google Chrome:
https://support.google.com/chrome/thread/181054223/google-chrome-helper-app-keeps-getting-message-when-i-turn-on-my-mac?hl=en
THE FOLLOWING IS AN EXPERIMENT
IF you choose to follow the principle of those steps for Google Chrome
Without Brave Browser running . . .
Go to the /Applications folder and delete (move to the Trash and Empty the Trash), the Brave Browser.app.
Delete (move to the Trash and Empty the Trash), the following 3 items:
The BraveSoftware
folder at:
/Users/username/Library/Caches/BraveSoftware/
The com.brave.Browser
folder at:
/Users/username/Library/Caches/com.brave.Browser/
The com.brave.Browser.savedState
folder at:
/Users/username/Library/Saved Application State/com.brave.Browser.savedState/
Re the BraveSoftware folder at:
/Users/[username]/Library/Application Support/BraveSoftware
. . . without Brave Browser (“BB”) running, backup that BraveSoftware folder to some location that is safe (external drive would be excellent) . . . and then, also move the BraveSoftware folder to the Trash, but DO NOT EMPTY the Trash.
Restart the Mac.
Install Brave Browser.
During the first run of Brave Browser, try to minimize your input for settings. For example, do not setup for Brave Rewards and other features. Do not attempt to customize in detail, the new installation.
Because, I suspect that there is a chance to replace the specific, new “Default” folder at:
/Users/[username]/Library/Application Support/BraveSoftware/Brave-Browser/Default
. . . with the specific, old “Default” folder that you had been using ← that you can find in your backup you just made or in the Trash.
After all that, Empty the Trash.
Restart the Mac. Examine the Notifications settings ← set as you wish.
I did not find info that would have guidance on how to specifically disable Notifications for the following processes . . .
Actual location of the Brave Browser.app’s Brave Browser Helper processes - on the Mac:
Brave Browser Helper (GPU).app
/Applications/Brave Browser.app/Contents/Frameworks/Brave Browser Framework.framework/Versions/135.0.7049.84/Helpers/Brave Browser Helper (GPU).app
Brave Browser Helper (Plugin).app
/Applications/Brave Browser.app/Contents/Frameworks/Brave Browser Framework.framework/Versions/135.0.7049.84/Helpers/Brave Browser Helper (Plugin).app
Brave Browser Helper (Renderer).app
/Applications/Brave Browser.app/Contents/Frameworks/Brave Browser Framework.framework/Versions/135.0.7049.84/Helpers/Brave Browser Helper (Renderer).app
Brave Browser Helper.app
/Applications/Brave Browser.app/Contents/Frameworks/Brave Browser Framework.framework/Versions/135.0.7049.84/Helpers/Brave Browser Helper.app
Brave Browser Helper (Alerts).app (lists in MacOS folder structure as: Brave Browser.app)
/Applications/Brave Browser.app/Contents/Frameworks/Brave Browser Framework.framework/Versions/135.0.7049.84/Helpers/Brave Browser Helper (Alerts).app