No problem with computer before connected to a airport wifi, I did using VPN.
I don't know if its correlated but I'm desparate and I'm looking to check everything to solve it
1)
I turned off my PC and I got
"Failed to start process error reports when automatic reporting is enabled"
I tried to solve with this guide but still no working
Failed to start process automatic reporting is enabled
I got unable to locate lightdm
-I turned on and I solved using:
sudo systemctl disable apport.service
2)
I realized after that wifi was connected but not working so:
• I tried Changing the resolv.conf file and still no working
$ cd /etc
$ sudo nano resolv.conf
Changed the Content as following:
Generated by NetworkManager
nameserver 8.8.8.8
nameserver 8.8.4.4
•sudo systemctl restard Network manager
•Following this video: https://youtu.be/Rc7lZV_xvTU
3)
I think it's something related with drivers:

4)
The stranger fact is that if i connect with my virtual box i can connect with internet
Still not working, i tried in the last week almost every video and guides here, can someone help me?
Thank you in advance
UPDATE
(i'm still replying from VBOX)
Thank's to @user68186 i've open the VPN and turned off "kill switch" and wifi is working again.
But is really slow, almost 2min to reload the page and google chrome is not working:
"Google chrome is not responding
You may choose to wait a bit ecc.."
the results of:

SUDO APT GET UPDATE
SUDO APT-GET UPGRADE
Fetched 781 MB in 1min 16s (10.3 MB/s)
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openssl/libssl1.1_1.1.1l-1ubuntu1.6_amd64.deb 404 Not Found [IP: 91.189.91.38 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
I finally update the driver nvidia to 515, do you suggest other one?