Concerning the timeline of the three synoptic Gospels and the Gospel of John please see below:
https://steemit.com/christian-trail/@ironshield/bible-study-my-response-to-mark-aka-mr-easyfix
If you've decided the New Testament is not true, it's not my place to convince you otherwise. That is between you and your Savior, the God of Israel.
I believe you cannot keep the Torah without listening to the words of the "Prophet like Moses" which are spoken in the Name of the Most High God of Israel.
I will raise up for them a prophet like you [Moses] from among their brothers. And I will put my words in his mouth, and he shall speak to them all that I command him. And whoever will not listen to my words that he shall speak in my name, I myself will require it of him. Deuteronomy 18:18-19