See the below links for help troubleshooting your network. Destiny 2 is fully online with no reported issues.
https://www.bungie.net/en/errorcode/Chicken
https://help.bungie.net/hc/en-us/articles/360048717512-Error-Code-CENTIPEDE
https://www.bungie.net/en/errorcode/Weasel
EDIT: Apparently it’s a local ISP issue with Meo in Portugal. I advise to contact them if that is your ISP.