Is this ST7735 based LCD module broken? (Photo: random color pixels on the entire screen)
I am sorry for the fuss. It was a premature question without any details. In the end, I fixed the problem. When the display sleeps out, it is very well normal to have a screen like that. We need to overwrite that memory with our own image. I tried 16 bits color mode and it worked fine.

Thank you and I apologize to those who tried to help me.