Because its much more powerful To go directly to the source Hashem our loving father for help then to go through messengers. Yes there is a famous line called “tzaddik gozer Hashem mekayaim” which means when a righteous man calls out to Hashem then Hashem always answers his call BUT the power of turning directly to Hashem the source is way more powerful. A person can call out wholeheartedly to Hashem in any language at any time as we say from Tehillim every time we bench after a meal “Vdorshei Hashem lo yachsiru chol tuv” which means for one that seeks out Hashem directly lacks nothing.
Lets all remember this and work on our faith and trust in Hashem our loving father and king of kings ruler of the world