I have been using it on my iPhone for about three months.
It has problems with much more than five open tabs, but it is stopping the adware.
IIRC it will permit some ads (you select?) but blocks anything you don’t want. The revenue from the ads goes into some sort of fund with some coming back to the user.
Probably totally wrong but that’s what I remember from looking at Brave’s site once upon a time.
Also check out TOR Browser. I hear it’s fantastic. I have been using dinosaurs. — NO MAS!!