No one said it is being done wrong; but those churches you list (and many others, I too have attended, and even belonged to many Protestant denominations) are “doing it in remembrance”, in the various Catholic and the Eastern Orthodox churches the bread and wine become the body and blood of Christ - in the way He taught the Apostles at the Last Supper.
Jesus said to ‘do this in remembrance of me’, again, look back and see what He said before that: “Take this, all of you, and eat it: this is my body which will be given up for you.” “Take this, all of you, and drink from it: this is the cup of my blood, the blood of the new and everlasting covenant. It will be shed for you and for all men so that sins may be forgiven. Do this in memory of me.”