#how would you crate this effect ? (not the text"the background") as you can almost see some texture
toxic sparrow
foggy robin
It looks like it's just grain.
It's in filter>noise>add noise and adjust according to what you like
The exact number depend on your liking and also the size of the image so I can't give you numbers here
You can also apply the noise filter to a neutral layer set in the Overlay blending mode, so you have the noise separated from the layer (Or apply the filter on a smart object for another non-destructive approach)
Check Gaussian and monochromatic for a more natural effect
obsidian mica
In addition to Sandrine’s on point information, here are other methods: https://medium.com/@stefanhrlemann/how-to-create-noisy-risograph-style-gradients-and-textures-in-photoshop-in-3-ways-394d6012a93a
toxic sparrow
sorry. appreciated