Everything tries to launch as root

sudo apt install synapse

1. open menu, run synapse
2. search for an application, for example 'google'
3. when trying to launch the following message is displayed:

Google Chrome cannot be run as root.
Please start Google Chrome as a normal user. To run as root, you must specify an alternative -user-date-dir for storage of profile information

Attempted to rectify:

sudo apt purge synapse*

the reinstalled.

If I try to launch terminal, no message appears and app does not launch.

Xubuntu 16.04