i have linux manjaro on my macbook pro 2017 with touch bar , i am connected to the internet via ethernet , i am trying to share a hotspot to my phone but when i try to join from my phone it says (unable to join network , this network is operating on wifi channels in use by several other nearby networks) . any fix ?
Welcome here, @Dragon 
Make sure your wifi card supports hotspotting. Check for Supported interface modes e.g. by
iw list
Have you studied the wiki already?
https://wiki.archlinux.org/title/Software_access_point
https://wiki.archlinux.org/title/Internet_sharing
There is also a helpful AUR package called linux-wifi-hotspot which could be installed via
pamac build linux-wifi-hotspot
2 Likes
This one also worked for me
pamac build linux-wifi-hotspot
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