The "servers are not available" message indicates that you are experiencing connection issues of some kind that is happening between you and Destiny 2. This may be an ISP issue.
Below are suggestions to help resolve the issue:
[quote][b]1.[/b] A wired connection is recommended to play Destiny, and if your connection is being used for other things when playing the game, such as streaming, it's recommended to quit those programs.
[b]2.[/b] [b][url=https://www.bungie.net/en/Help/Article/12539]Clearing your console cache[/url][/b] or, if on PC, [b][url=https://support.steampowered.com/kb_article.php?ref=2037-QEUH-3335]verify the integrity of your game files[/url][/b].
[b]3.[/b] Power cycling your internet router
[b]4.[/b] Review Bungie’s guide on [b][url=https://www.bungie.net/en/Help/Troubleshoot?oid=13603]improving latency and packet loss[/url][/b] to see if that might help
[b]5.[/b] Following Bungie’s [b][url=https://www.bungie.net/en/Support/Troubleshoot?oid=12915]Network Troubleshooting Guide[/url][/b] for best optimizing your connection to Destiny. If issues persist, try their [b][url=http://www.bungie.net/en/Help/Troubleshoot?oid=13610]Advanced Steps Networking Guide[/url][/b] for possible router solutions, such as enabling UPnP. You may also want to enable IPV6 on your router if you have it.
[b]6.[/b] [b][url=https://www.bungie.net/en/Forums/Post/253755591?sort=0&page=0]This player found a solution that involves installing new network driver[/url][/b]
[b]7.[/b] You may want to change your DNS server on your console to Google's Nameservers (220.127.116.11. and 18.104.22.168.)
[b]8.[/b] Contact your internet service provider to see if there are any issues with your connection.[/quote]