Found 233 Man made CC0 textures in library

Aerial Asphalt 01
Asphalt 02
Asphalt 03
Asphalt Floor
Asphalt Snow
Beam Wall 01
Beige Wall 001
Beige Wall 002
Blue Floor Tiles 01
Blue Painted Planks
Book Pattern
Brick 4
Brick Floor
Brick Floor 002
Brick Floor 003
Brick Moss 001
Brick Wall 001
Brick Wall 003
Brick Wall 005
Brick Wall 006
Brick Wall 04
Broken Wall
Brown Brick 02
Brown Leather
Brown Planks 03
Brown Planks 04
Brown Planks 05
Brown Planks 07
Brown Planks 08
Brown Planks 09
Brushed Concrete
Brushed Concrete 03
Brushed Concrete 2
Castle Brick 01
Castle Brick 02 Red
Castle Brick 02 White
Castle Brick 07
Castle Brick Broken 06
Castle Wall Slates
Castle Wall Variation
Ceramic Roof 01
Church Bricks 02
Church Bricks 03
Clay Floor 001
Cobblestone 01
Cobblestone 05
Cobblestone Color
Cobblestone Floor 001
Cobblestone Floor 01
Cobblestone Floor 02
Cobblestone Floor 03
Cobblestone Floor 04
Cobblestone Floor 05
Cobblestone Floor 07
Cobblestone Floor 08
Cobblestone Floor 13
Cobblestone Large 01
Cobblestone Square
Concrete
Concrete Brick Wall 001