我 只是 想 知道 这 到底 是 怎么 一回事 Hi could someone translate this sentence please

我 只是 想 知道 这 到底 是 怎么 一回事
Hi could someone translate this sentence please

我 I

只是 only, just

想 would like

知道 to know

这 this

到底 finally, in the end

是 to be

怎么 why

一回 one time, the same

事 matter

我只是想知道这到底是怎么一回事
I just want to know what this is finally all about.

I didn’t get how you interpreted the last half:

到底 finally, in the end

是 to be

怎么 why

一回 one time, the same

事 matter

to:

’ what this is finally all about’

Could you also say

什么这个到底 都关于?

I just would like to know what’s going on?