Like riding a bike, language fluency is dependent on practicing the right things more than trying to learn the right things. This is why language coffee shop clubs are so useful.
A language coffee shop club, by its nature will focus on real conversation, as opposed to the technical knowledge of the language.
Grammar can be learned through materials and classes, but the vocabulary and idiomatic usage will come from independent study and practice in a native environment.
This isn’t to play down the advantages of schools and online materials. These are valuable in their own right and should be made use of. But these materials should be seen as supplementary to the actual conversation skills you will pick up in a language club.
In doing this you will learn a language quickly and efficiently. Some students have picked up languages such as German in as little as 10 weeks by studying in this way.