Lincs,
Cherry picking a quote from St Augustine doesn’t resolve 4 Gospels plus Paul nor 2000 years of Scholars, Partiarchs, Popes, Saints and Intellects.
And I do believe St Augustine believed in the real-presense in fact he stated so several times. So we would have to take the entire content of the Dr of the Church and take into consideration the translation then re-evalutate. But we are taking “Sola Scriptura” here Bible, so should I quote a 100 or so Saints which disagree with your understanding of St Augustine?
Calvery and Cross doesn’t seem to be an issue. The Sacraments understood and the Church, Baptism, Eucharist reconciliation/Communion penance seems to be the issue.
IMHO you would first have to provide the body of evidence your even in a valid church.
Since between
Matthew 16:18 Jesus established and protects His church
Matthew 28:20 He promised to remain with THAT church always.
John 16:12 The Holy Spirit guides the church into all Truth
1 Timothy 3:15- The Church (not the Bible) is the pillar and foundation of Truth.
Matthew 18:17-18 If someone refuses to listen to the church cast him out.
Matthew 28:18-20 The Churchs authority is Jesus Christ.
1 John 4-6 Anyone who knows God listens to His Church.
Luke 10:16 He who rejects His church rejects Christ.
Matthew 16:19 The Church has the power to legislate
Acts 15:28 Decisions of the Church are decisions of the Holy Spirit,
Acts 15:6-29 The Apostles and the elders of the church settle the disputes.
Acts 16:14 People are to observe the decisions of the Apostles and Elders
Acts 1:25 The APOSTLES CHOOSE SUCCESSORS(Bishops)
Titus 1:5 Bishops appoint presbyters(Priests)
1 Peter 5:5 Be subject to the Elders.
Hebrews 13:17 Obey your leaders and Submit to them.
1 Corinthians 1:10 THERE MUST BE NO DIVISION AMONG YOU.
Ephesians 4:4-5 There is One Body, One Lord, one Faith and ONE Baptism.
Now its would seem to me while questioning tradition which your are. Perhaps you should carefully consider you own. And I’m still waiting for the verse that states “Just Pray to Jesus and your Sins are Forgiven” specifically stating that.

So yes this oral and written tradition you have a issue comprehending on Holy Week no less, I believe is a lack of your own understanding. Which of course isn’t to say you are entitled to your own opinion. However I believe its a bit bias to suggest others are not entitled to theirs when they follow 2000 years of Apostolic Tradition.
Now for the “Bible Alone” better known as Sola Scriptura??? Which is the OP
Acts 8: 26-35 Guidence is needed to interpret the Scritures (which BTW the Catholic Church wrote and compiled.)
1 Timothy 3:15 The Church (not the Bible) in the pillar and foundation of Truth.
2 Timothy 3: 16:17 Scripture is profitable for teaching , that the man of God may be complete.
Acts 2:24 The Church followed Apostolic Teaching (no0bibles or printing press was invented) a teaching straight from God. Amazing some assume they got this wrong.
2-Peter 1:20 Scripture is NOT a matter of ones own interpretation!!!
2-Peter 3:16 The ignorant and unstable twist scripture to their own destruction.
Proverbs 3:5 Do not rely on your own insight.
And there you have a “small” idea of why we follow the CC oral and written tradition which was in effect practiced before the Bible was written through Apostolic Succession. And then came the canons, Bible. I would then conclude any mistakes happened after the printing press and our famous Sola Scriptura happened along with 3300 denominations of which they all insult, mock and call each other cults and the like. Very unchristian btw. And such folly has continued.
But no were not talking about the Doctors of the Catholic Church, thats just a losing propostion for you. Real Presence is an affirmative with all of them.
The above should give you an idea of “why” we follow sacred oral and written tradition and pay no mind to SS. Of cousre along with the actual words of Jesus Christ to the Apostles about eating His flesh. Which btw he specifically stated YOU HAVE NO LIFE otherwise. For he is truly present their.
And to boot this still doesn’t resolve why in the world you follow a Sacred Tradition you don’t believe in Real Presence, so you follow what you believe is a hollow act. And presented by those who have no Authority in Christs Church to perform. Just Saying I find it a bit hard to comprehend the significance of this.
Prayers are with you, GT
Again… Where does Christ specifically state “JUST PRAY TO ME AND YOU SINS ARE FORGIVEN” I missed that verse.