Sorry to hear about this, @Amoun. Was your TE club also connected to Google or Apple Game Center by any chance? If so, then you can still use these login details to access it from those respective platforms.
If that's not the case, you will have to do your best to get access to the FB account in question, as nikolgiorgos said. Reach out to Facebook Support and see what they say.
I also strongly suggest reaching out to our own Support Team here so that they can have another look. Really hope you can get your team back, good luck!