general: sv is too high for an easy difficulty; use something like 0.8x or 0.9x
00:00:120 (1,2) - overlap looks ugly. (overlaps are ugly in general if theyre not meant to be part of a pattern tbh) replace with something like this and center a bit more
00:03:014 (1,1) - replace with just one spinner lasting from the start of the first spinner and ending at 00:05:546; in the original case the first spinner seems too short for an easy
00:05:908 - should be clickable; generally all strong sounds in the music should be mapped to a slider head, circle, or slider tail.
00:06:993 (1) - too curved. if the song isnt doing anything special, like sounds breaking the pattern the music sets (which it isnt, in this case), then a generic amount of curve is fine.
00:08:802 (2) - replace with a slider like this; ending on the 3rd white tick of the measure
00:10:249 - should be clickable
00:11:696 (3) - maybe extend this all the way to 00:12:781
00:11:696 (3,5) - these overlap, and random overlaps are ugly. ill stop mentioning overlaps.
00:14:590 (6) - replace with 2 sliders like this
00:17:484 - there's no strong sound here, it shouldn't be clickable. start 00:17:484 (8) on 00:17:845 instead. also make it a repeat slider like this; that way you can still map the second 'smoke'
00:18:931 - add 1/1 slider here
00:19:654 - same as above
00:20:739 (9) - this is ignoring a lot of potentially clickable sounds. i'd suggest replacing this entire slider with a rhythm similar to what i suggested in the above 3 points. same problem with the spinner and slider after it.
etc. all the problems with your easy are ignoring clickable sounds, overlaps, and the like. find them and fix them.

od is way too high for an insane diff, change to something like od7 or 8
00:00:481 (3,4,1) - should be equidistant from each other. equidistance is a great way to make patterns look nicer.
00:00:662 (4,1,2) - follows the same concept above. the sliders seem too close for comfort imo.
00:01:567 (3,4,5,6) - make this neater and more symmetrical, right now 00:02:109 (6) to be off by a lot for a pattern to be formed here
00:02:109 (6,1) - there's a random overlap here
00:03:014 (3,4) - ^, space these further apart.
00:03:375 (4) - ctrl+g so that it's easier to enter this slider from the previous one
00:03:737 (5,6,7,8) - spacing is inconsistent with previous hitcircle combos, make larger.
00:03:918 (6,7,1) - overlap
00:05:184 (2,3,4,5,6) - ^
00:05:817 (6,1) - because 1 is 1/4 beats after 00:05:817 (6) (ie. part of the stream), they should overlap. streams usually overlap, so players will expect this to overlap as well.
00:05:908 (1,2) - i'll stop mentioning the overlaps
00:05:908 (1,2) - fyi if these were symmetrical or mirrored in some way they would look nicer. symmetry is a great way to give your map pleasing aesthetics.
00:06:631 (3,4) - ok maybe i'll mention this last one
00:08:802 (1,2,3,4) - inconsistent spacing
00:10:249 (7,1) - yeah this counts as an overlap too in case you didnt know
00:15:313 (8,9,10,11) - these are 1/2 beats, they shouldnt be spaced so close, since they might be confused for a stream
00:16:760 (1,2,3,4,5,6,7,8) - this is more subjective, but this stream clumps up a lot. maybe replace it with a curved stream like this? also if you didnt know ctrl+shift+f to convert a slider into a stream lol
00:18:931 (5,6,7,8,9) - the short stream here is overdone, there's nothing to emphasize here for it to be justifiable, plus theres no sounds on the blue ticks
00:25:080 (3,4,5,6) - ^ same as above. also usually streams have an odd number of notes in them because thats more comfortable to play
00:30:507 (4,5,6,7,8) - overdone
00:33:400 (2,3,4,5,6) - ^, just replace this with a slider
00:36:656 (1) - spinner should start on the strong sound on 00:36:294
00:38:465 (1) - put this in the dead center of the map; most players focus there during and after a spinner so make that last note easier to see for them

00:11:696 (3,4,5) - if you're trying to make a straight line, move 00:11:696 (3) 1 to the right
00:11:696 (3) - try not to overlap sliders too much, as this may cause confusion for newbies
00:20:739 (8) - don't make a slider have too many repeat ticks, newbies won't be able to follow it
00:26:527 (1,2,3,4) - same as what i said in second line

there is a thing called "too many sliders"

00:03:014 (7,8,9,10) - honestly, this looks a bit ugly...
00:39:460 (2) - why the fuck is this here? remove it, it's unnecessary

00:19:654 (17,18,19,20) - i dunno... these finishes might make this map unrankable, especially the first 2 finishes

i don't see much issue here.

00:31:049 (9) - this may be very confusing, put a new combo here