Linux 101 stuff. Questions are encouraged, noobs are welcome!

As the title states whenever I try to login and start the desktop environment (xfce4 and dwm) I get kicked back to the login screen with no error message. Beforehand I was messing around with configuring dwm. I've tried updating through the tty and deleting dwmblocks (which is what I was messing with before all this)

Here's the Xorg log: https://paste.debian.net/hidden/2936c842/

Here's the output when running startxfce4:

usr/bin/startxfce4: Starting X server

(EE)
Fatal server error:
(EE) Server is already active for display 0
                if this server is no longer running, remove /tmp/.X0-lock and start again.
(EE)
(EE)
Please consult the X.org foundation support at http://wiki.x.org for help.
(EE)
Authorization required, but no authorization protocol specified

xinit: giving up
xinit: unable to connect to C server: Resource temporarily unavailable
xinit: server error