Error: Connection activation failed: (53) The Wi-Fi network could not be found. - Realtek 10ec:8852 on Ubuntu 20.04

I have an HP Envy x360 laptop with AMD Ryzen 7 5000 series CPU and AMD Radon GPU. I installed ubuntu 20.04 on it. But I cannot connect to WIFI. Here is the info about WIFI on my system:

"lshw -C network" output:

 *-network description: Wireless interface product: Realtek Semiconductor Co., Ltd. vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:01:00.0 logical name: wlo1 version: 00 serial: c8:94:02:a9:c7:ef width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=rtw89_pci driverversion=5.13.0-30-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11 resources: irq:89 ioport:2000(size=256) memory:d0800000-d08fffff 

"lspci -nnk | grep 0280 -A3" output:

01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:8852] DeviceName: WLAN Subsystem: Hewlett-Packard Company Device [103c:88e1] Kernel driver in use: rtw89_pci 

I followed this link to install a new rtw89pci driver.WiFi adapter not found Realtek 10ec:8852 on Ubuntu 21.04Unfortunately, after I finished all steps described there my wifi still didn't work. I can select my home WIFI network, but I cannot connect to it.

I got the following error message when I tried to connect to WIFI:
Error: Connection activation failed: (53) The Wi-Fi network could not be found.

I did notice from my "lspci -nnk | grep 0280 -A3" output, it still says "Kernel driver in use: rtw89_pci". In reality it should be "rtw89pci". I don't know if this is the issue. I also don't know how to unload rtw89_pci and load rtw89pci. I did run "sudo modprobe rtw89pci" without issue.

Any help will be greatly appreciated.

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