Your interpretation of those verses add anything and everything else where it does not exist.
It doesn't say *Scripture and......*, *Scripture and tradition*, *Scripture and sacraments*, *Scripture and the magisterium*, *Scripture and (fill in the blank)*.
Nope, not adding a thing to it. Accept it as it is - which is not "scripture alone." It's when you try to use it for "sola" that something needs to be added - that something being sola or alone. The verse is perfectly fine and clear otherwise.