Two updates ago I lost my ability to connect to the internet

Two updates ago I lost my ability to connect to the internet. This happens when I change to a newer version of Ubuntu and when a change is made to the Ethernet package. I am currently running:

lsb_release -aNo LSB modules are available.Distributor ID: UbuntuDescription:    Ubuntu 22.04.3 LTSRelease:    22.04Codename:   jammy

My Ethernet controller is:

sudo lshw -C network  *-network UNCLAIMED              description: Ethernet controller       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller       vendor: Realtek Semiconductor Co., Ltd.       physical id: 0       bus info: pci@0000:03:00.0       version: 03       width: 64 bits       clock: 33MHz       capabilities: pm msi pciexpress msix vpd bus_master cap_list       configuration: latency=0       resources: ioport:ce00(size=256) memory:fdfff000-fdffffff memory:fdff8000-fdffbfff memory:fd600000-fd61ffff

ip link show1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

sudo modprobe r8168 modprobe: FATAL: Module r8168 not found in directory /lib/modules/6.5.0-14-generic

sudo apt-get install r8168-dkmsReading package lists... DoneBuilding dependency tree... DoneReading state information... Doner8168-dkms is already the newest version (8.049.02-1ubuntu1.2).0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.

sudo apt install net-toolsReading package lists... DoneBuilding dependency tree... DoneReading state information... Donenet-tools is already the newest version (1.60+git20181103.0eebece-1ubuntu5).0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.

sudo modprobe r8168modprobe: FATAL: Module r8168 not found in directory /lib/modules/6.5.0-14-generic

sudo systemctl restart network-manager.serviceFailed to restart network-manager.service: Unit network-manager.service not found.

In the past doing this used to restore my Ethernet connection, but this time it has not. Can anyone please tell me what I have done wrong or what has changed in 22.04.