00:22:295 - to 00:36:623 - Unclear what the 1/2 notes are addresing:
*vocal (very unlikely): a note is missing in places like 00:22:519 - and 00:22:967 -
*piano: seems like there are too many extra notes like 00:23:414 -
*synth (I guess? That very crispy melody): missing at 00:26:101 - and 00:34:608 - , and many of them should be snapped in 1/4 like on HD
*hihat: should have a note on every 1/2 beat across this part
I'd catch the kick+snare and the vocal in this part, but this is very free and personal choice so you can go with anything you like.
In the intro some of the LNs are off beat if they follow the synth:
00:10:653 (10653|0) - 1/2 late (NM/HD)
00:14:235 (14235|0) - 1/2 late (NM)
00:17:817 (17817|0) - 1/2 late (NM/HD)
00:16:026 - Could be an 1/2 LN since the synth repeats here (HD)
If you feel unfamiliar with mania charting, stick with rule "same sound with same amount of notes". Try to plan roughly what kind of chord/pattern you are going to use for each sound/part of the song.
Some part of the map could have a more balanced pattern. Like 00:07:628 (7628|2,7828|2,8028|2,8228|2) - this anchor is avoidable if it's not intentionally designed. Similar issue see 01:15:228 - and 01:22:828 -
LN usage seems unclear in many parts.
In the intro LNs cover multiple strings, but you can map them separately with 1/2 LNs for more accurate emphasis.
00:20:428 - it's unclear what sound you focus with the LNs (vocal or piano), bcs none of these proceeds in 2/1 tempo. So again you have to follow the sound exactly from beginning to end.
The rest is kinda mirroring what I pointed out above. Anyway I really like the multi LN you mapped in several sections.
Check Asherz007's tip box: https://osu.ppy.sh/users/9014047 , there's complete info about charting that I believe will help.
There are some 1/4 sounds missing in the intro part like 00:02:950 - , and 00:03:464 - can be mapped along with the vocal. The pattern here is maybe too similar to Hard, so you can buff it with 1/4 snaps and stronger chord, until 00:23:864 - .
And again about the gap from Hard, many places have even weaker chord/LN usage vs Hard, for example:
00:22:836 - less sounds focused
00:29:007 - single LN vs double LN and double release
00:44:093 - simplyfied pattern vs 1/4 snapping and LN jack
01:03:978 - much more complicated LN pattern in Hard
and many more... There are still large space to buff the pattern with chord, LN or minijacks if you want a little bit more technical.
You use jumptrill to emphasize 1/4th drum rhythms, it's ok even though ppl today are quite against it. But for a longer phase of chord trill, try to make a little variation to make it less bland, and you can certainly use different pattern in another part of music.
Otherwise the structure looks satisfying, and check AImod about timing reports in this diff.