I'm back with the next chunk. There is only one piece left after this, so I won't be here to bother anyone about translations anymore. It took me
some time because I had revised some stuff. I just wanted to sprinkle some extra misery in it.

Lyrics:
I had many prayers, prayers that were in vain.
I can not feel anything anymore.
Every single thing leaves me all alone.
I hoped for more time.
I have wasted my life waiting.
You will never come back to my side.
Nothing will remain as time passes.

Is iomdha paidir atá curtha agam agus ba bhaoth iad go léir?
The third line maybe fágann gach aon rud im' aonar me
I am hesitant to attempt the other lines as I am a terrible translator, but I will think harder if no one else replies.

Edit:
Ní thiocfaidh tu thar n-ais chun mo thaoibh choidhche for you wont ever come back to my side? That is a literal translation but is considered béarlachas (anglicised Irish). Ní thiocfaidh tu thar n-ais chúgham choidhche means you wont ever come back to me if you'd like to avoid that, but await better suggestions I advise.

Also, it is currently not relevant. But, since I was not here for the majority of this 11 page discussion - I have just scrolled thru - I will settle a debate. Feidhleacán is the Waterford variant of butterfly not peidhleacán, that must be WM only. And I have never heard bealach in Waterford Irish.

I will do a few more.

Tá mo shaol curtha amú agam a'fanúint - ive wasted my life waiting
Do bhíos ag súil le tuilleadh ama - I was hoping for more time
Ní bheidh aon rud fágtha diaidh ar ndiaidh - Eventually nothing will be left(theres got to be something better for this line)

Táim me gan mhothúchán anois maybe for the second line, literally "i am without emotion now," maybe there is something better.

Anyway, to sum it up my best attempt:
Is iomdha paidir atá curtha agam agus ba bhaoth iad go léir
Táim me gan mhothúchán anois
Fágann gach aon rud im' aonar me
Do bhíos ag súil le tuilleadh ama
Tá mo shaol curtha amú agam a'fanúint
Ní thiocfaidh tú thar n-ais chun mo thaoibh choidhche
Ní bheidh aon rud fágtha diaidh ar ndiaidh

Wait to see if anyone else comments, but if no corrections come it can be assumed it is ok probably.

Thank you for being so helpful.

Im' chaogaidín aonair is a Kerry form of "im' aonar," may be more 'poetic.' Cork has 'im' chaogaidhe' also.
what about le h-imtheacht aimsire, as time passes, instead of diaidh ar ndiaidh (eventually)?