"그러나 아직 그것이 거기에 있습니다."

But it's there yet 은 안될까요? ㅡㅠ

Yet이 문장 앞에 들어가야만 맞는건가요?

However it is there yet. 이거는요?

But it is still there. 도 맞다고 합니다.

This is a terrible translation in my opinion. The most literal translation would be "But that thing is still there."
More common would probably be , "But it is still there."

Also correct would be, "But that thing is there still." or "But it is there still."

"But it is there yet" is correct, but not as commonly used.

Usually, in the context - But yet it is there.- "yet" does not translate to "아직"

Without context it is difficult to know how to translate a single sentence. But I would translate "But yet it is there" as "그래도 그것이 저기에 있다." or

그렇긴 그런데 어쩐지 그것이 저기에 있다. or

"아무튼 그건 저기에 있다.

Nobody knows where it came from, but yet it is there.

I don't like it. But yet it is there, so I have to deal with it.

It shouldn't have had time to arrive. But yet it is there.

한편에

버릴라고 약속 했는데 "그러나 아직 그것이 거기에 있습니다." He promised to throw it away, but it is still there. (Sometimes, for emphasis, we say "But yet it is still there."