Alternative to this subreddit

Hi all. Happy new year in advance!

As per title, what is your go to social network for advice in Luxembourg, for serious and reliable exchanges, news and advice, for grown ups and not for teens? For the sake of clarity: a network where our questions and replies advising on laws, life in Lux, services, news etc get actually published, without a flooding of eggnogs posts or 3rd country nationals with no ties to here recurrently asking for naturalisation and relocation or people misinforming others?

I like the pragmatism and seriousness of the FB expat group, but there is not the option to post anonymously, which was removed a year ago.