Network filtering/VPN configurations not working

Hello, I'm experiencing issues with multiple apps on macOS related to network-related tasks. FIrst, I had problems with the network filter on Avast security. It told me to allow net work filtering, so I pressed the popup button that said allow filtering, but did nothing and gave me a error. Later on, on Nord VPN didnt work aswell, when I had to grant permission to configure a VPN. It didn't even give me a description of the error, just said something went wrong. I contacted NordVPN support, which didnt do anything exept for telling me to uninstall avast and restart my mac, which I did but was useless. Please help me.

Network filtering/VPN configurations not working
 
 
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