The term "wert level" refers to a state of being low or of a poor quality. There are several synonyms for this phrase, including "low state," "inferior quality," and "subpar condition." "Substandard" and "suboptimal" are also good alternatives for "wert level." If you're looking for a more colloquial way to describe this state, you might use "below par," "not up to snuff," or "not quite there." No matter which word or phrase you choose, they all convey the same meaning: something that's not quite where it needs to be in terms of quality or performance.