Trying to capture one monitor with maim

I have two monitors and I would like to only screenshot the main one, maim by default screenshots both monitors as one big monitor, and doing

-x :0.0

doesn't work. I'm trying to figure this out so I searched and found the commands

/tmp/.X11-unix

which returns

and

/tmp/.X11-unix | tr 'X' ':'

which return

:0

. It looks like it's detecting both monitors as one or am I wrong? I did

| grep ' connected'

and it shows

HDMI-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 598mm x 336mm
DP-5 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 598mm x 336mm

Please keep in mind I have no idea what I'm doing I'm very new to linux and I'm trying to learn it so I switched to it as my daily driver to learn. What can I do to be able to screenshot one monitor?