Here is a mod for you. 00:25:780 (1) to (00:47:931 (4) - The slider velocity is too fast because this is supposed to be calm part of the song. I can see parts where you lower the slider velocity to emphasize the singer's voice, which is good, but the slider velocity is too fast. I suggest that you do 0.90 slider velocity. The spacing is also too big because players won't expect to do a jump or to move their cursor faster in a calm section like this. Try overlapping circles and\or sliders, and make spacing closer to make it more comfortable.
00:31:361 (1,2) - The beat of 2 is too fast for the player to hit it because it is a 1/4 beat. Players will assume 2 will be a 1/2 beat because you spaced it like a jump, but since you timed it in a 1/4 beat, it's confusing. I prefer that you put 2 next to the slider tail of 1, or remove 1 completely and make it a triple.
00:46:012 (1,2,1,2) - Making the second 1 a new combo doesn't emphasize an important sound. New combos are used to emphasize certain sounds, and this doesn't emphasize anything, so just remove the new combo from the second 1.
00:46:710 (1,2,3) - Don't place 2 like that if you want it to be a 1/4 beat (Which is the rhythm of a stream). If you want to keep this, I suggest overlapping 1, 2, and 3 like a stream. Here is a badly made visual representation of that: ( )=======(3)(2)( )======(1) <------ direction of flow
^
00:47:059 (3,1) - This is the slider from the mod above. The slider tail of 3 isn't facing 1, which makes movement uncomfortable. Players will tend to follow slider ends, so if you aren't pointing them towards the next object, it won't feel comfortable. Face the slider tail towards 1 to fix this
00:57:873 (1,2) - Changing slider velocity like this is not comfortable to follow because it's a big change in speed. Keep the slider velocity the same as 1.
00:51:594 (2) - You have to move all the way from 1 to 2 and once you finish 2, you have to reverse your direction to get the next object. This is a big example of uncomfortable movement. Ctrl+g 2 and flow will be comfortable.
00:53:338 (2,1) - You mistimed 1 accidentally. It sounds like it's the same time as 2's slider tail. Place 1 on a white tick on the timeline like this:
00:59:617 (2,3,4) - If you place 3 like that, it's going to be hard to hit. Place 3 overlapping 2's slider end and 4's slider head.
01:00:315 (5,1) - You're facing the slider end away from the next object, which creates uncomfortable movement. Face it towards the next object to make comfortable movement.
01:02:059 (1,2) - ^
01:03:105 (5,1) - ^
01:03:454 (1,2,3,4,5,6,1,2) -
This is a good example of flow. Each object leads to the other object very obviously. In order to keep and make flow, you have to do it like that.
01:05:198 (2) - The slider's curve is facing down and the next object is going up. In order to keep flow, you have to make sure that the direction you want the player to go is obvious, so make the curve face up to keep flow.
^
01:05:460 (3,4) - ^ You should also place 3 in between 2 and 4 so it can be easier to flow towards it.
01:05:896 (5) - ^
01:06:245 (1,2) - Just make it a stream. Players will expect streams in a 5.8* map.
01:06:943 (4,5,6) - This is uncomfortable movement. Place 5 to the left of 4, and point 4 towards 5. 4 leads to 5, and 5 leads to 6, which leads to the next object. I'm pretty sure at this point you know how to fix simple flow problems now.
01:07:989 (2,3,1) - 3 is a 1/4 beat, but you spaced it like a jump, which players interpret it as a 1/2 beat. Either put 3 and 1 at the end of 2's slider tail, or put 1 near 2, and put 3 in between 2 and 1.
01:09:036 (1,2,3,1) -
This is a bad example of flow. 2 isn't even on 1's slider tail, and 3 is going in the opposite direction of the first 1. The second 1 goes in the same direction as the first 1, and because you're going to the right after you hit 3, it's uncomfortable to move like that. I couldn't explain it better. Either remap this part of the map or do this: ctrl+g the first 1, put 2 directly on the slider tail of the first 1. 3 is okay, but I don't know what to do with the second 1. Sorry.
01:10:257 (3,1) - Uncomfortable movement here because you're moving right but 1 is above 3, and 1 going down. Ctrl+g it so it can make flow more comfortable. After ctrl+g it, you can just leave it there, but I also recommend that you put it t to the left of 3.
01:11:129 (1,2,3,4) - Movement is uncomfortable because you have to move to the right immediately after moving down. Switch the places of 2 and 4 to keep the flow.
01:14:268 (5) - Face the curve upwards so it can go to the next object.
01:15:664 (6,7) - It isn't necessary or bad to keep it like this, but I suggest putting 7 on the slider head of the next object. You can keep it that way if you want to.
01:16:012 (1,2,3,1) - The first 1 is facing away from the next object and same with the second one. Ctrl+j and ctrl+g the first 1, then put it back in it's normal position to make it flow better. Do the same with the second 1.
01:17:059 (2,3,1) - Uncomfortable movement right here because 3 is going the other direction of 1. Place 3 on the right of 2, and flow will be better.
01:17:757 (2,3,4,5) - ^
01:18:454 (5,1) - ^
01:19:065 (2,3,4) - You don't need to change it, but I
highly recommend that you make it a stream instead because it's right after a slider. Doing streams after a slider is a common mapping thing, and this is one of the situations that you can do it.
I'm gonna stop before this wall of text becomes Donald Trump's wall to keep the Mexicans away. (No offense to anyone lol)
Anyways, I hope this helped you a lot, and good luck with your map!