"Don't overthink it..."
Do not pray to be heard by people. Pray to be heard by God.
Prayer is not a contest to see who's the better speaker or who's more holy.
It is an interpersonal connection with God, so keep it real and personal! God wants you to come to Him as a child would go to his father, with innocence and sincerity - steered by love.
Remember, God is love. A true prayer connection comes from a loving heart, not an arrogant head. Long, drawn out prayers without substance mean nothing to God. But a sincere heart does.
Don't overthink it. Just pray...