Sometimes it is tempting to feel that God is not quick to help in times of need. Especially when one is threatened physically. A person who knew that all too well was King David, who prayed that God deliver him from his enemies often. It was so common that the end of Psalm 40, which speaks of this topic, is repeated almost verbatim as Psalm 70.
The Bible is filled with multiple passages concerning prayer. Some of these speak about the attitude we should have, topics to bring before God, and more. All of which are good to consider, but one question we may still have is whether or not it is okay for us to pray publicly before eating meals. This cannot be answered with a straightforward "Yes," or "No." Especially since Jesus taught against praying publicly in some contexts.