ASUS TUF A17 AMD Ryzen 7 + nvidia GTX 1660 Ti - Second external monitor (usb 3 to HDMI adaptor) is not recognized

Hello ladies and gents.

After almost 5 months since I’ve purchased the mentioned laptop, it’s time to add one more external monitor. I’ve installed ubuntu 20.04 LTS. In the beginning, the black screen kept popping up until I found this topic, and thanks to @generix I’ve made my laptop recognize the second monitor. I have a dual boot on it and recently I bought one more external monitor. Booting on Win (via usb3 to HDMI adaptor) the 2nd monitor is recognized. This is not happening on ubuntu boot. I kept trying to find this problem in someone else topic, but without success. Here are some outputs:

$ sudo dpkg -l |grep nvidia-prime
rc  nvidia-prime                                                0.8.16~                      all          Tools to enable NVIDIA's Prime
$ sudo dpkg -l |grep ubuntu-drivers-common
ii  ubuntu-drivers-common                                       1:0.9.0~                     amd64        Detect and install additional Ubuntu driver packages
$ uname -r
~ sudo lshw -c video
       description: VGA compatible controller
       product: NVIDIA Corporation
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: /dev/fb0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller cap_list fb
       configuration: depth=32 latency=0 mode=1920x1080 visual=truecolor xres=1920 yres=1080
       resources: iomemory:fc0-fbf iomemory:fe0-fdf memory:fb000000-fbffffff memory:fc00000000-fdffffffff memory:fe00000000-fe01ffffff ioport:f000(size=128) memory:fc000000-fc07ffff
       description: VGA compatible controller
       product: Advanced Micro Devices, Inc. [AMD/ATI]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:05:00.0
       version: c5
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi msix vga_controller bus_master cap_list
       configuration: driver=amdgpu latency=0
       resources: iomemory:fe0-fdf iomemory:fe0-fdf irq:50 memory:fe10000000-fe1fffffff memory:fe20000000-fe201fffff ioport:d000(size=256) memory:fc500000-fc57ffff

Any help will be much appreciated.