Parts and patterns with no hitsounds attached are very noticeable.
Since hitsounds are usually intended to make it easier for the player to understand the timing of the hit, it is not friendly to have no hitsounds in feeback-wise.
Let's look at some of them.
00:19:189 - Here, the map follows melody-like sounds, but only sounds that have nothing to do with it are hitsound, and sounds that are followed by the map have no hitsound.
would be better to add another sound, even if it is just a triple, such as 00:19:789 (3,4,5) - 00:20:689 (3,4,5) - etc.
02:34:895 (2,3,1,2,3,1,2,3,1,2,3,4,1,2,3,1,2,3) - There are no hitsound in section.
03:06:284 (1,2,3,1,2,3,1,2,3,1,2,3,4,5,6,7,8,9) - You may want to try adding new custom.
hitsound file soft-hitwhistle (custom1) was too similar to the song to be heard very well. hitsound should be attached so that it can be audible, so the volume of this should be increased considerably or another custom should be used.
00:19:189 - It would be easier to compare in this section.