According to the Macmillan Dictionary, find yourself somewhere means to realize that you are in a place or doing something without really intending or planning to.
In this regard, I wonder whether this phrase can be used to express a situation you got into by chance.
Once I went out to buy milk. Eventually, I found myself at a mass demonstration. I didn't want to protest against closure of the pit and couldn’t realize how I got there.
EDIT. The reason for being involved in the demonstration is that one was curious about what was going on, and got too close to the rally. Then one found oneself at the epicentre of events, suddenly and unexpectedly.