Welcome to the Atlassian Community!
If https://trello.status.atlassian.com is showing ok, then this problem is likely to be with your network, not Trello.
Where are you located? This is likely to be the first thing to look at, as there are always problems with the great firewall of China, and the Russian Federation, its allies and occupied territories may be having problems as sanctions are imposed in protest against their invasion of Ukraine.
If it's not that, then it may be worth taking up with your network admins.