There may, have been some Christians there, and if so, they were mostly foreign merchants, and with no Church, though they still don't predate the Christians in Europe. The problem is we have literally no historical record of that. The only historical record we have, including in Ethiopia itself, is of the adoption of Christianity in 330AD.
What fact? There is literally no evidence of a Christian Church in Ethiopia before the 300s. The Church was established because the King was converted by the Greek Frumentius, not through any existing flocks. Sorry, but now you're just making things up. Even the Ethiopian sources themselves disagree with you there.
I already gave you the whole picture. You would rather rely on wishful thinking than actual historical record, though, which is understandable. You just can't deal with the fact that some European Catholics converted your ancestors and are going to all kinds of lengths, talking about Christianity on the other side of the continent, to try and avoid that very simple fact.