מתי כותבים dont ומתי כותבים doesnt?

dont:
i, you, we, they
doesn't:
he, she, it

i don't wanna go to school tomorrow
she doesn't wanna go to school tomorrow

he
she
itכותבים doesn't

we
you
they
i כותבים dont

דוגמה: it dosen't work

doesnt זה ל he she ו it

dont:
i
you
we
they

doesnt
he
she
it