Dual monitor scalling

Hello I am absolutely beginner to Linux. I have installed manjaro with xfce . how ever i need to have dual monitor setup . my laptop has 1920x1080 resolution and my external monitor has 1366x768 resolution. i have my external monitor on left side and laptop in right side . everything in my laptop seems bit small and everything in my external monitor seems bit large , i tried searching everywhere but couldn’t found any solution . please help me !here is my setup :

xrandr
Screen 0: minimum 320 x 200, current 3286 x 1080, maximum 16384 x 16384
eDP-1 connected primary 1920x1080+1366+0 (normal left inverted right x axis y axis) 309mm x 174mm
1920x1080 60.02*+ 60.01 59.97 59.96 59.93 48.03
1680x1050 59.95 59.88
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1280x800 59.99 59.97 59.81 59.91
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
700x525 59.98
800x450 59.95 59.82
640x512 60.02
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
640x400 59.88 59.98
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
HDMI-1 connected 1366x768+0+312 (normal left inverted right x axis y axis) 410mm x 230mm
1366x768 59.79*+
1920x1080 60.00 59.94
1280x800 59.91
1280x720 60.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
DP-1 disconnected (normal left inverted right x axis y axis)