I didn't understand what "they found a saviour/But then was filled with doubt" meant. Who was filled with doubt: the narrator or 'they'? This needs to be clearer. Also, this is a passive construction. Get rid of it - turn it around!
"...they found a saviour/
and filled themselves with doubt."
Something like that. See how that's much more direct and straightforward. Active writing is key to producing great writing; it SHOWS the reader what's happening instead of simply TELLING it - it pulls them into the action. I know this is a common ailment amongst writers but eventually with practice you'll shake off the habit.
The piece has great potential. When it works, it works beautifully. Good work.
8/10
