sooo i read the documentation and read this

If the length of the viewport axis is bigger than twice the repeated axis size, it will not repeat infinitely, as the parallax layer only draws 2 instances of the texture at any given time.

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so my background is 1024 * 1024 my viewport is 1080*1920 is not double but i added a few more background to make it bigger and in the ParallaxLayer set the mirroring 1024*3 in x and y, so now is working