CentOS

There is a known selinux-related issue with the Nvidia driver version 450.57. You may want to try the fix provided in :

https://bugzilla.redhat.com/show_bug.cgi?id=1851448#c10

after lspci -nn, this is the output 02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8822CE 802.11ac PCIe Wireless Network Adapter [10ed:d822] I was not able to find a driver that supports the device ID pairing [10ed:d822]. However in the ELRepo's bug report you filed, you show...

You have two possible solutions now that RH won't fix it.

One is to ask CentOS to enable the kernel option in the centosplus kernel (kernel-plus). The other is to ask ELRepo to build the module as a kmod package. With kmod, you do not need to rebuild for each kernel update.

I suggest you file a request to build a driver for RHEL/CentOS 7 at ELRepo's bug tracker. Be sure to provide the info presented here.

What is the output of "lspci -nn" ? Post the line for your wifi device. It will show the device IDs [xxxx:yyyy].

Check out this ELRepo's blog. You might be able to find the driver for your device for el8.

According to the person who is maintaining wireguard for Fedora and CentOS:

the wireguard mailing list is most likely the best spot for this.

I think there is also an IRC channel for wireguard. Hope you can get help from those venues.

As referenced in the blog post, many people found this youtube tutorial video quite helpful.

You may want to check to see if your controller is supported in CentOS/RHEL 8. See this ELRepo's blog for more into.

How did you install wireguard? Using elrepo's packages?