Without using the Nextcloud sync app, you can connect to the cloud server directly.
- Open your Nextcloud web interface at https://cloud.YOURDOMAIN.net
- Go to Files from the top menu
- Find the Files Settings in the bottom left corner
- Copy your WebDAV address, something like this https://cloud.YOURDOMAIN.net/remote.php/dav/files/USERNAME
- Open Finder in your Mac Click Go – Connect to server
- Paste WebDAV address copied above
- Select “registered user” and enter Nextcloud Admin Username and Nextcloud Admin Password
- You may want to “Save username and password in the Keychain” so you won’t have to enter it next time.
- You have server folder now, which you can add to sidebar in Finder for quick access.