You should be 200-300k but you aren't because you aren't working on accuracy and have B's and C's as top scores. Go back to 3.0-3.5 and work on getting 98+ acc and playing by rhythm.
I would also suggest not retrying maps so much, just play it once and move on to another map. Only retry (up to twice) if you are confident you can fc with 98+ acc
Ranking/pp is extremely weighted towards getting full combo and high accuracy 98+. Notice how your S rank on a hard map is more pp than a B on an insane map