Another tool that I've found to be incredibly helpful for breaking app-addition is the colorblind accessibility tool. You can use it to make the entire phone greyscale, which entirely defeats a huge range of techniques that apps and feeds use to draw your attention. Tiktok in greyscale I would estimate is 1/10th as likely to pull me into a 5+ minute video binge vs the full color version. And 1/100th as likely to pull me into a 90+ minute video binge (which unfortunately does happen to me in full color).