Breakdown of C'est ce match que nous devons gagner.
nous
we / us (object pronoun)
ce
this (before a noun)
le match
the match / the game
gagner
to earn / to win
devoir
to have to / must
c'est
it is, that is
que
that (introducing a clause)
Elon.io is an online learning platform
We have an entire course teaching French grammar and vocabulary.