Okay
try to unwide your loud part
then turn the volume of your effected part down and wide it
Kind regards
J_*

My personal opinion is to not split your vocal line
you can sidechain if you want to be have 2 vocals with different effects
but man, why you dont use effects on your first vocal line? thats crazy
every vocal line should be have mastering
roll off and compression is necessary for vocals

its ok if you want to split your vocal lines but dont leave your first vocal line unaffected

Kindest regards
J_*

Okay so i will glad to write something to help you:
we have three phases of mastering:
roll off
compresion
2nd equlize for brighting (EQ)
widing
harmonic exciter (tube-tape-retro)
reverb
maximize
overview

first, what you need to be have a great vocal line is certainly "Roll Off"

Roll off means removing some additional frequencies
for example for male singer you should remove frequencies above 15000Hz and lower than 90Hz (its variable for each singer)
you can easily use a parametric equalizer for this
and some of them has a box which can show you which range of frequencies are additional like Fruity loops parametric EQ2
(which i use)

second thing you need for vocal line is compression
for example if singer shouts a lot in the vocal line
you should be have compression
it makes your vocal line's volume fixed
but sometimes for example you have a rock vocal line which has a lot of shouting and up and down
so you have to limit your vocal line with a limiter
but be careful, cuz limiting and compression should be average, not much and not low
if you have a loud vocal line after limiting, i suggest you to turn the volume down

and the last thing you should do, (except effects like delay, reverb, chorus and etc ) is widing
lemme give you an example,
if a guitar player play guitar in front of you in about 1 meters distance, you hear the guitar sounds loud
but if he goes far about 10 meters, you hear sounds lower

so the widing is same distance
its effective on volume, "but its not the volume"
I dont know what is the plugin in your daw for widing
and if you dont have one, I will be glad to send you one

but the only thing you should do for this track
is to "unwide" your vocal line with a widing plugin

Kind regards
J_*

Its so simple
just tell me what DAW you use
then I can give you some advice to solve that

Like
its a great track
and I think your vocal line is wide a bit
not loud
Kindest regards
J_

Nice sound here my friend, gets going around 1:05 then back to chillout. I think it would sound equally as good as an ambient chillout type track!? Anyways well done.

Great job! I like the chill vibe i'm getting!

I like ! good work :)