Hello guys, I am new in unity engine and having issue trying to use a texture in Tile Palette, they are heaped like in this photo
It seems like the Automatic Cell Sizing for your Tile Palette is not working out for you.
You can adjust it by selecting the Tile Palette asset in the Project window, expand it and select Palette Settings. You can then change the Cell Sizing to Manual:
After you do that, you can select the Tile Palette asset again and adjust the Cell Size for the Grid:
It seems that a larger Cell Size will help. You will need to save your Project for the changes to update.
Also, do check out the Pixels per Unit values for the Texture you are using. Do ensure that it is set correctly for your scene!