I’ll offer a slightly different approach. And that is “what do you want to be when you grow up”?
You may, of course, do whatever your employer tells you. And that’s fine. However when it is all said and done you will be what your employer wanted you to be and that may or may not be what you want.
If, in your heart, it is your dharma to be a fitness teacher then do that. Get a fitness certification and teach (if it suits you) wherever they accept such certifications.
If on the other hand your heart tells you to be a teacher of Yoga then your study will never cease. You will study, learn, and grow…sometimes in small measure other times in quantum leaps. But you will never reach an end. And you will have accepted a responsibility to serve as a conduit through which yoga will pass to those who study with you. In that scenario any “venue” that wants yoga to be shared with its clients will be interested in working with you.
My path began with a vinyasa training of only 40+ hours. In looking back it is obvious I was not qualified to teach yoga (or asana perhaps). However I was empowered enough to seek additional training and I’m now a certified Purna Yoga teacher at the 2,000 level and an RYT-500 with YA. But not so I could be hired by this place or that place. Only because this seemed like what I am here to do.