Hello @FeryET and welcome to the forum!
The answer to your question really depends on what kind of functionality you need. The main reason the mne package on conda-forge has so many dependencies (and why we recommend installing it into a separate environment) is because the 3D plotting dependencies are not trivial to install correctly.
There’s been some work on an mne-base conda-forge package without this huge number of dependencies, but it’s not in a working state yet.
If you don’t need 3D plotting and simply want EDF reading, you could simply install MNE-Python via pip install mne (instead of using conda)
Best wishes,
Richard