Share your non-working code.
Two places to look for example code are (1) the library you are using and (2) this forum (search on "P10 RGB HUB75"). Not all topics on this forum are "solved" but it a good place to search.
For example, this post: P10(3535)1632-2S-M3 are 1/2 scan - #8 by subairi
And this library: ESP32-HUB75-MatrixPanel-DMA/examples at master · mrcodetastic/ESP32-HUB75-MatrixPanel-DMA · GitHub
Also, the manufacturer of the panel should have some kind of support or bulletin board question/answer forum. And finally, the internet... lots of good stuff mixed in with the bad stuff.