If you are someone like me who finds login managers unnecessary and logs into window manager from TTY, this tweak can save you time.

Edit getty@tty1.service:

sudo systemctl edit --full getty@tty1.service

Find the line that starts with the ExecStart:

ExecStart=-/sbin/agetty -o '-p -- \\u' --noclear - $TERM

Replace \\u with the username you want to log into and add -n option to agetty:

ExecStart=-/sbin/agetty -n -o '-p -- yusuf' --noclear - $TERM

Now you can log into your specified user only by typing the password.

This only affects tty1; you can switch to another TTY to log in with a different username.

See man agetty for more information.