THe gospel of Thomas has lots of errors here is one for example

In 1 Cor 2:9, Paul paraphrases Isaiah:

“No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him.”

Now consider Thomas 17:
“Jesus said, ‘I shall give you what no eye has seen and what no ear has heard and what no hand has touched and what has never occurred to the human mind.'”

This webpage explains in great detail what is wrong with the Gospel of Thomas https://carm.org/does-the-gospel-of-thomas-belong-in-the-new-testament