The element used for the communion does not matter because it’s a symbol of something sacred. In the Old Testament, the Lord instructed that they must not put yeast and leaven in the bread. In the New Testament, God told us that the yeast is hypocrisy, symbolising insincerity in our walk with God. God is the only one you can afford to be directly honest with.
You are not telling God anything new about your case, He already knew before you found out yourself. God is not finding out about the sin in your life when you repented, He knew before you sinned that you were going to do it.
The bible tells us in 1 Corinthians 10: 2-4, “And were all baptized unto Moses in the cloud and in the sea; And did all eat the same spiritual meat; And did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that Rock was Christ.”; the holy communion is a physical food with a spiritual implication. The Communion is the only meal on the earth that has physical elements with a spiritual reality attached to it.