How to Use Textures
Use these textures on top of your photos with an overlay or soft light blend mode, transform them in any way you like, de-saturate or change the colours, and use a layer mask to paint out where you don't want the texture to be.
You can also use them as backgrounds by cutting out your main subject and placing it on top of the texture image.
Try using more than one texture! Consider de-saturating all or part of your original image when blending it with a texture. You can also add a hue/saturation layer on top of everything to help blend it all together.
The possibilities are endless.
You can use these textures with any photo editing software that supports layers, such as Photoshop, Photoshop Elements, Luminar, etc.