What career aims did you have when you chose your undergraduate major & graduate field? Teaching? Not much call for Japanese language teachers in K-12 & you would need M.Ed & student teaching experience to qualify for your state's teacher certification. However, community colleges might need an adjunct professor to teach Japanese. Having lived and/or studied in Japan, your fluency & PRONUNCIATION, matter.
Are you a certified court interpreter, or a translator? You might find freelance work, but a full- or part-time job is unlikely. Japanese companies, more than Japanese consulate, might need interpreter and/or translator work from time to time. For other jobs with Japanese companies, organizations, you'll need a lot more to offer than Japanese language skills.
What additional skills, abilities, training, etc, do you have besides Japanese language? You need to put together an array & market your unique package. If you only work as waitress, you are not putting yourself together, targeting relevant work, and getting your act together. You're passively looking for "jobs" when first, there are no significant jobs to begin with, and second, US has entered the Post-Jobs Era. Get your sht together instead of whining about the lack of jobs. You have to CREATE your own work, offer something of value to those who need it. Market yourself.