Ok so I wanted to install a lighter desktop that uses less ram than kde and I can’t connect to WiFi even by running wifi-menu it works fine in kde
Have you tried connecting via the cli as described here?
It sounds like you may be missing a wifi capable GUI network manager, there is a list here, but most common are wicd and connman.
I tried deepin de and still the same isues deepin has one built in
Sounds like the same problem to me.
I would say to try a CLI to connect, if that fails to post the error here.