you mean learn or use ?

They learn Grammar just after they got born
And use it in daily life too

Türkler,use only 1 languge,teach it to their kids too,along with the grammars

That's why in a survey,Türk kids are the first kids who learn their native languge very well,along with the grammar

being native Turkish and knowing grammar is not the same
in theory yeah we learn grammar and so... but its not so
plus with the internet language... with shortcuts... we forget what we learnt too

my advice then, try to remember all what you've learnt,its not easy to study Türk dilbilgisi
Even ask all the TC friends here,,lol