From a US perspective you mean - sure he is accountable for how the US manage their bit absolutely. Every leader of every nation is accountable to their people in every sense (particularly if it means a pandemic and how their nation addresses the issue).Handling a global pandemic??
Should have Trump sent US personal into Wuhan to stop it
How about India,Iran and the rest of the world
Why is everything bad in the world Trumps fault?
You are just creating a convenient narrative that any issue with Trump's handling of this specific issue means that he is responsible for the entire virus. This is a real test for every nation's leadership.
If you believe everything bad in the world is Trumps fault - then it is you that has TDS.