I installed sodium and fabric-loader properly. When I apply the setting to turn off the fog, it is still visible!

It is definitelly either a bug or my stupid mistake.
Thanks in advance with helping me with this problem, I think Sodium is one of the most underrated and still the best projects to optimise minecraft. It should be definitelly more recognised. <3

you want sodium-extras to disable the fog. you are turning off fog occlusion, which prevents the rendering of chunks hidden by the fog effect.

Sodium does not have an option to disable fog. You will need to use a third party mod to do this. Options include Sodium Extra and NoFog, but there are likely others.