Network Unclaimed - Ubuntu 20.04 on freshly installed machine

I installed Ubuntu on my brand new lenovo laptop:

Distributor ID: Ubuntu
Description:    Ubuntu 20.04.3 LTS
Release:    20.04
Codename:   focal

and now, I can not use my wifi. After I checked sudo lshw -C network, I found that the network is UNCLAIMED

  *-network UNCLAIMED       
       description: Network controller
       product: RTL8821CE 802.11ac PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: cap_list
       configuration: latency=0
       resources: ioport:3000(size=256) memory:a1200000-a120ffff

Then I ran lspci -knn | grep Net -A3; rfkill list which gave me:

01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
    Subsystem: Lenovo RTL8821CE 802.11ac PCIe Wireless Network Adapter [17aa:c024]
    Kernel modules: rtw88_8821ce, rtl8821ce

I came across similar problem and the solution was to install the correct firmware, however that was for ubuntu 16.04 and I was also not sure whether I have the same problem.

Here is my kernel version, running uname -a gave me:

Linux philgun-Lenovo-V15-IWL 5.13.0-27-generic #29~20.04.1-Ubuntu SMP Fri Jan 14 00:32:30 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

What should I do?

Thank you P

Please start by blacklisting the ineffective driver:

sudo -i
echo "blacklist rtw88_8821ce"  >>  /etc/modprobe.d/blacklist.conf
modprobe -r rtw88_8821ce
exit

Reboot and tell us if there is any improvement.

EDIT: To install the latest rtl8821ce driver, get a temporary internet connection by ethernet, tethering or whatever means possible and do:

sudo apt update
sudo apt install rtl8821ce-dkms

Reboot.