Jesus Christ believed in your "so called myth" about Noah and how he built and ark which saved him and his family from the flood.
Matthew 24:37-39
37 But as the days of Noe were, so shall also the coming of the Son of man be.
38 For as in the days that were before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noe entered into the ark,
39 And knew not until the flood came, and took them all away; so shall also the coming of the Son of man be.
Peter the head apostle believed there was a flood of Noah's days also.
1 Peter 3:20
20 Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water.
Paul, the Apostle, also believed in the story of Noah and the Flood.
Hebrews 11:7
7 By faith Noah, being warned of God of things not seen as yet, moved with fear, prepared an ark to the saving of his house; by the which he condemned the world, and became heir of the righteousness which is by faith.
I put my trust in the Lord Jesus and his apostles before I put my trust in Thomas Swan.