How to say "originally" in German?
I was originally going to [INSERT ACTION] but I ended up [INSERT ACTION] instead.
Any help would be appreciated.
Eigentlich is a synonym of ursprünglich, see duden.de: https://www.duden.de/rechtschreibung/eigentlich_wirklich_urspruenglich. I'm German and I would definitely use it that way, even for examples like 'Ich wohne in England, aber eigentlich komme ich aus Deutschland.'
In my opinion there is a slight difference between these two words:
ursprünglich = in the beginning I wanted to do something but later I did something else. Or: years ago I used to live/was born in this town/area but now I live somewhere else.
eigentlich = now I do something but actually I wanted to do something else. Or: It looks as if it is like something but in reality it's different. Or: I use something but to be honest I don't like it.