przez który / z powodu którego

w takim na przykład kontekście

To rower przez który / z powodu którego nie udała nam się wycieczka.

because of which
which was the reason why...

Also :
Let’s say, this is your input sentence : "The trip fell through because of that damn bike".

Now you want to focus on the ‘bike’, right , you can use clefting :

It was the bike that was to blame for the trip debacle.
It was because that damn bike that we decided to call it off ( meaning the trip )

Thank you Unremittingly savage wilderness-backed rhino and Magnanimous Gesture