I have made a particle system that has some cloud PNGs as textures to make an illusion of cloudiness/fogginess. It has all went well and replicated all the apparent render settings that This Video told me to do (at 21:40). Yet, the viewport showed what I wanted to see but when I rendered it, instead of looking extra misty and cloudy, you can more clearly see the cloud textures which takes away from the scene.

see in the attached photo.the samples are at 100

Ive tried scaling it up even more but it still shows less mistiness (not sure how to describe it), ive revised my render settings and ticked Z, combined and mist in View Layer > Data. What can I do ?