“kosher and shabbos are the most important for a jew.”
You keep saying this, on what do you base this statement? Why is taharas hamishpacha, hearing the shofar on Rosh Haashana or kibbud av or any other of the taryag mitzvos any less important?
I dont know where it has come from, but it seems that has become the general definition. There are unfortunatly many people who keep shabbos and kosher and for example do not daven 3 times a day or learn every day
There are also R’L many women who keep shabbos and kosher and wear pants and do not cover their hair