Why doesn’t my brave browser not show Ads?
Hello @Mamun258, Are you using the Developer version? Also it could be that you country has not yet been included to start showing ads.
To follow up on @iznai, Brave Ads are currently only available in the US, UK, Canada, France and Germany. Also iPhones are not supported currently.
If none of that applies to you, go to chrome://rewards and check if the two topmost sliders are enabled.