I had been having a hard time for couple of monts with doomscrolling on apps like Instagram and Reddit. Last year, I tried using Apple's built-in screen time on my iPhone to set limits to my usage of these apps. However, in most cases, I would just tap on the "Ignore Limit for 15 Minutes" notification that appeared every time.
This became so frustrating that I tried many third-party blockers. Most of them would require a local VPN to be installed, so draining the battery and having access to all of my traffic, which did not seem like a good privacy tradeoff to be honest.