This is unexpected because I thought N5 was supposed to be easy, but I seem to be constantly tripped up by these random rules lying all over the place: “polite” can sometimes be です, sometimes ます, and sometimes the question will accept either form. Then ます sometimes comes alone but also sometimes comes with ある. And if I want to make an adjective formal, then I must use です, but if it’s negated AND formal then ます comes back into the picture. Then half the particles seem incredibly similar to each other: へ、に…and I’ve still never found a good resource that actually explains when to use が and when to use は.
When I go through my reviews I find myself often hitting 60% accuracy because of these small things. Is N5 grammar truly the “easiest” grammar, does it only get worse?