Zorin 16.2 camera doesn't run

Hello, I have problem with camera. I use Lenovo Yoga Duet 7, i5.
lshw -C video
*-display
description: VGA compatible controller
product: Intel Corporation
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: iomemory:600-5ff iomemory:400-3ff irq:156 memory:601d000000-601dffffff memory:4000000000-400fffffff ioport:3000(size=64) memory:c0000-dffff memory:4010000000-4016ffffff memory:4020000000-40ffffffff

root@Draci-lovec:~# ls -ltrh /dev/video*
crw-rw----+ 1 root video 81, 0 lis 24 10:16 /dev/video0

root@Draci-lovec:~# cheese
../src/intel/isl/isl.c:2105: FINISHME: ../src/intel/isl/isl.c:isl_surf_supports_ccs: CCS for 3D textures is disabled, but a workaround is available.

(cheese:30966): cheese-WARNING **: 10:41:56.908: Selhalo přidělení požadované paměti.: gstv4l2src.c(660): gst_v4l2src_decide_allocation (): /GstCameraBin:camerabin/GstWrapperCameraBinSrc:camera_source/GstBin:bin18/GstV4l2Src:v4l2src1:
Buffer pool activation failed

root@Draci-lovec:~# cat /etc/os-release
NAME="Zorin OS"
VERSION="16.2"
ID=zorin
ID_LIKE=ubuntu
PRETTY_NAME="Zorin OS 16.2"
VERSION_ID="16"
HOME_URL="Zorin OS - Make your computer better."
SUPPORT_URL="https://help.zorin.com/"
BUG_REPORT_URL="Send Feedback - Zorin OS"
PRIVACY_POLICY_URL="Privacy Policy - Zorin"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

I receive still a message about buffer error. Have you someone an idea, please?

Are you seeing an error for video being unable to play on the webcam or are you seeing the webcam as not Being Detected?

I am looking for a camera which was not detected. Exactly: it seems that a camera is detected, but not activated due to an error "buffer..."

I found this from a websearch, I am wondering if it fits your situation: [Workaround] Cheese Blank Screen or Display Corrupted in Ubuntu 22.04 | UbuntuHandbook

Edit: I just noticed that the link refers to Ubuntu 22.04 wheras ZorinOS16 is based on 20.04.