You are not taught all truths by the Holy Spirit. That promise was for the Apostles alone, not you.
If you were under proper eldership in a local church, Heb 13:7,17 you would have been instructed properly.
Your lone ranger philosophy is not found in scripture.
What other parts of the Bible do you think apply to the Apostles alone? Since the original Apostles are long dead, do you think that the New Covenant applies only to them?
John 16:13 says, " When the Spirit of truth comes, he will guide you into all the truth, for he will not speak on his own but will speak whatever he hears, and he will declare to you the things that are to come." I don't think that applies only to those to whom Jesus spoke directly. Rather, it applies to all those who have received the Holy Spirit.
If you believe this applies to apostles only, what other parts of the New Testament apply to them only???
For example, Acts 2:1-6, "When the day of Pentecost had come, they were all together in one place. And suddenly from heaven there came a sound like the rush of a violent wind, and it filled the entire house where they were sitting. Divided tongues, as of fire, appeared among them, and a tongue rested on each of them.
All of them were filled with the Holy Spirit and began to speak in other languages, as the Spirit gave them ability."
And Acts 9:17, "So Ananias went and entered the house. He laid his hands on Saul and said, “Brother Saul, the Lord Jesus, who appeared to you on your way here, has sent me so that you may regain your sight and be filled with the Holy Spirit.” This happened to Saul before he became the Apostle Paul.
Acts 13:38-52, " When the gentiles heard this, they were glad and praised the word of the Lord, and as many as had been destined for eternal life became believers. Thus the word of the Lord spread throughout the region. But the Jews incited the devout women of high standing and the leading men of the city and stirred up persecution against Paul and Barnabas and drove them out of their region. So they shook the dust off their feet in protest against them and went to Iconium.
And the disciples were filled with joy and with the Holy Spirit."
Ephesians 5:17-19, "
So do not be foolish, but understand what the will of the Lord is. Do not get drunk with wine, for that is debauchery, but
be filled with the Spirit, as you sing psalms and hymns and spiritual songs to one another, singing and making melody to the Lord in your hearts,"
Colossians 1:9, "For this reason, since the day we heard it, we have not ceased praying for you and asking that you
may be filled with the knowledge of God’s will in all spiritual wisdom and understanding,"