○○は本当に「コロナのせい」だったか検証すべきって英語でなんて言うの？

• "It should be investigated if 〇〇 is really due to Covid 19."
  -"If 〇〇 is really due to Covid 19"「○○は本当に「コロナのせい」だったか」
  "really" 「本当に」
  "due to Covid 19" 「コロナのせい」"because of Covid 19" も使えます。
  "should be investigated" 「検証すべき」

"It should be investigated if the rise in suicides is really due to Covid 19"
「自殺者数の増加は、本当にコロナ禍のせいだったかを検証すべき」

"○○は本当に「コロナのせい」だったか検証すべき"
- We should investigate as to whether or not XXX was really caused by the coronavirus.
- It should be investigated if XXX was really the fault of COVID-19.

「自殺者数の増加は、本当にコロナ禍のせいだったかを検証すべき」
- We should investigate as to whether or not the rise in (the number of) suicides was really caused by the coronavirus.