Why are you even reading or quoting the Bible? It was selected by a church, in fact the Church Christ established on earth and vested with the authority to guide all people to Him. That Church has taught that Mary is to be respected and the legitimacy of praying in communion with the whole Church, with both those on earth and those in the next life.
Do you ask others here to pray for you? Why? Why not just do your own praying directly to Jesus?
I don't understand why you are wasting your time reading the writings declared as scripture by a Church whose teaching on how to properly interpret it you appear to reject.
The Bible is not the sole repository of the faith, it is a group of selected writings the early Church determined to be scripture based on their consistency with the teachings of the Church. It was not designed as a textbook from the ground up to encompass the totality of the teachings of the apostles. It reinforced some, but not all of what was being taught by the apostles.
John 20, 30-31
30 There were many other signs that Jesus worked in the sight of the disciples, but they are not recorded in this book.
31 These are recorded so that you may believe that Jesus is the Christ, the Son of God, and that believing this you may have life through his name.
2 Thess 2:15: "Stand firm and hold fast to the Traditions you were taught, whether by an ORAL STATEMENT or by a letter from us."
Phil 4:9: "Keep on doing what you have learned and received and HEARD and SEEN IN ME. Then the God of peace will be with you."
1 Corinth 11:2: "I praise you because you remember me in everything and hold fast to the Traditions, just as I handed them on to you."
2 Thess 3:6: "We instruct you, brothers, in the name of our Lord Jesus Christ, to shun any brother who conducts himself in a disorderly way and not according to the TRADITION they received from us."
1 Peter 1:25: "...but the Word of the Lord REMAINS FOREVER. This is the Word that has been PROCLAIMED TO YOU."
If you reject the Church's authority, than what is your basis for accepting the Bible? If the Church has been wrong in interpreting and teaching the faith, why not their selection of scripture as well. Should they have included the Gospel of Peter, or the Apocalypse of Peter or other works proposed but rejected? Or their translation. Do you agree with Luther in rejecting the seven books? In changing the translation from 'saved by faith' to 'saved by faith alone." One word change, but it is pretty significant. Particularly as it conflicts directly with much of Jesus teachings on bearing good fruit, the necessity to act on our faith. And that addition of one word is a direct contradiction with the letter of James.
I only accept the Bible as scripture because I first accept the authority of the Catholic Church, Christ's Church as the foundation on which it rests.
Back on topic. A symbol only has meaning once people agree to that meaning. I don't see a problem with wearing a cross sideways as a reminder that we are to pick up our cross and follow Jesus. It does make an interesting conversation starter and could give the opportunity to carry out our duty to spread the gospel. I would stay away from the inverted cross though, it does have some negative connotations and despite you personally using it as a reminder of Peter, others may take offense. Just my .02.