If you are not fond of wine, you can make Kiddush on grape juice or even on challah.
There is a difference between matzah as stam a regular food and matzah as a mitzvah object, which one is halachically obligated by Torah law to ingest on the first night of Pesach. The reason we don’t eat matzah on erev Pesach (or, according to some customs, for a month before yom tov) is (a) so we will be able to eat it at night with a hearty appetite, and it will be dear to us and (b) to distinguish between matzah as stam a food and matzah as a mitzvah object. [If one would eat matzah on erev Pesach or at any other time, it would be stam a regular food, but on the night of the seder it becomes a mitzvah object, every kezayis of which fulfills an additional mitzvah d’oraysa.]