my 2000 pp friend passed it
i cant clear it
there's no real guideline
pp =/= skill in a general sense. Mostly just indicates farming ability, which takes a certain level of consistency but comparing farming to hard passes is apples to oranges. There are 6-7k pp players who aren't farmers that can pass doppelganger 490 style but a lot of people on the global top 50 just fail it because they are largely tryhards that aren't comfortable playing these kind of shitmaps. Of course the lower ranked players can't set the kinds of scores a top 50 guy does either, their accuracy/consistency is significantly worse even if their reading or speed is up to par or better. It's not like one type of player is better or worse, they have different ways of playing and the one has a style that is heavily favored by the pp system.
Play for hard passes if that's what you enjoy, but don't bother even looking at pp at that point for reference on what you should be able to do. you will rank up passively just by becoming better overall but not nearly as fast. You'll probably feel under ranked when you go into a multiplayer and pick a comfort map for you that just makes people at or above your rank fail miserably but you're just buying into the idea that rank represents skill at that point. If you still can't get over it, develop your farming skill as well until you're satisfied with your pp.
As a disclaimer, there's obviously some correlation between pp and skill in the broader sense, like if you can pass doppelganger as a hard pass player you should still be able to crap out at least near 300 pp scores with misses and low acc, by accident or otherwise. Doesn't mean much though when the average player who farms 300 pp scores will fail a few seconds into that map.
That's just my subjective opinion though, maybe there are people with 20 pp top ranks that have passed freedom dive for all I know, but it seems incredibly unlikely. For farmers, pp makes it extremely easy to see what they can or should be able to do so they have the advantage in that regard. When you are ready to pass big black comes down to your intuition alone, which makes it a hard road to walk.