Why are standard browser bookmark managers still so frustrating to use?

​Despite all the advances in productivity tools, standard browser bookmarking feels stuck in the past. Nested folders quickly turn into a mess, and search rarely helps me find what I actually saved.

​I have tried third party tools like Raindrop and Arc but adding another app to the mix always brings friction.

​How are you actually organizing and finding saved links without letting them disappear into a black hole? Or have you just given up and embraced 500 open tabs?