Raspberry pi 4b resolution

Hi . I have a raspberry pi 4b. And I installed manjaro xfce. I use micro hdmi to vga converter. But I do not have a resolution of 1366x768. Whatever I did, I did not succeed. Thank you for your help.
Monitor : Samsung s19A310N plus

the rpi does not handle that resolution, there’s a fix that’s close enough.
https://forums.raspberrypi.com/viewtopic.php?t=284866