I Havent Switched to Manjaro Right now because i think that i can’t use wifi after fresh installation of manjaro because there will be no driver installed for my wifi adapter. But when i was checking out the live demo of Manjaro to just feel the look of it. It seemed that i was able to use my wifi adapter to use wifi does that mean manjaro has a built in driver for my wifi adapter if not how can i install the driver for my wifi adapter
If your wifi works on the liveUSB that means it should work on an installed system.
Otherwise … see these things…