I can't just watch from the sidelines, I need to get involved.
hands tied
Frequency:
70
%
I wanted to help, but my hands were tied.
sit idly
Frequency:
60
%
Instead of sitting idly, we should take action.
Idiomatic Expressions for to sit on your hands
Phrase: don't just sit on your hands
Meaning: to not remain inactive or passive
Usage: If you see something wrong, don't just sit on your hands - speak up and take action.