Texture is really caused by emphasis of shadow. If you imagine a golf ball with all those dimples and photograph it with the light full on the front face then there will be very little shadow and the ball will look flat. When the light is directional, i.e. from above, below or either side then shadow is increased and so is texture.
Again, using the example of a golf ball. Even with directional light, if you shoot a golf ball from about 15 feet then the shadow detail will be lost. So you need to get up close to see all that shadow.
Many things have texture but the main favourites with photographers are wood, stonework or brickwork, rusty metal, peeling paint and plants or tree bark. Just look around, there are plenty of items in the home or garden that have texture.
Note that conversion of some images to black & white may emphasise texture. It is all a matter of preference.
Here are some examples.