I also acknowledge my screen addiction, and use a Screen Time pin (set by a family member) to help manage my usage. Brave really needs this!
Apple “Screen Time” support IS now available for testing in Chrome on iOS, so hopefully Brave is not too far behind. MacOS support in Chromium/Chrome is also in the pipeline: Support Apple's "Screen Time" in Brave on MacOS and iOS 14+
As an aside, a tool I highly recommend for managing screen addiction is Freedom. I use it daily to block social media and other distractions during work hours, and before bed. It is absolutely invaluable to me and keeps me focussed at work and stops me from staying up late on my phone. Its only disadvantage (not Freedom’s fault) is that it doesn’t work as well as it could on iPhones as there is no Screen Time API in iOS . Apple really need to add this, or at very least create a scheduler for ScreenTime blocks.