Rabbeinu Yehuda Ben Yakar mentions that נסיך here may refer to נסיונות, that we are thanking Hashem for the challenges that He gives us every day.
Etz Yosef says that these miracles are not referring to miracles that are constantly happening. It is referring to the open miracles which are always with us in our minds, meaning we always are aware of these open miracles that have happened.
שהם עמנו בידיעתנו
So בכל יום עמנו does not mean that they are happening every day, but that we know of them, or think of them, every day.
However, Iyun Tefillah states that this is referring to miracles which Hashem does every day. He seems to understand it to refer to hidden miracles, which are referred to in the verse עושה נפלאות לבדו. This does not mean we do extraordinary things with the expectation of the miracle, it means that part of our normal daily function is that hidden miracles happen.
Siach Yitzchak explains that these miracles are with the Jewish people, meaning that they are not necessarily happening to every individual every day, but they are with the Jewish people as a whole. According to this, the miracles being referred to are not necessarily happening to any individual on any given day.