Destiny 2 is not played on any servers. You were restricted because players reported you for your poor connection. You may not have seen anything wrong, but clearly other players did.
The first restriction lasts for 2 weeks and if things do not improve on your end, you will be restricted again for 2 months.
See the below links for help.
https://help.bungie.net/hc/en-us/articles/360049496531-Network-Troubleshooting-Guide
https://help.bungie.net/hc/en-us/articles/360049517431-Destiny-Account-Restrictions-and-Banning-Policies