Thy Will Be Done!

Some people think that closing a prayer with “but Lord, not my will but Your will be done” is a sign of no faith.
To tell you the truth, I’m not really sure what that means. Jesus prayed, “Father, if you are willing, take this cup from me; yet not my will, but yours be done.” (Luke22:42)

Was Jesus low in faith at this point in His earthly life? If you know the answer to this question, please help me.
Yes, I pray saying, “Abba Father, take this from me but not my will, but yours be done.”
While thinking about this question, worship God with me with this beautiful song:
Here is the lyric:
I’m so confused
I know I heard you loud and clear
So I’ll follow through
Somehow I ended up here
I don’t wanna think
I may never understand
That my broken heart is a part of your plan
When I try to pray
All I got is hurt
And these four words
Thy will be done
Thy will be done
Thy will be done
I know you’re good
But this don’t feel good right now
And I know you think
Of things I could never think about
It’s hard to count it all joy
Distracted by the noise
Just trying to make sense of all your promises
Sometimes I gotta stop
Remember that you’re God
And I am not
So thy will be done
Thy will be done
Thy will be done
Like a child on my knees all that comes to me
I know you see me
I know you hear me, Lord, ///