Not going to lie. Without knowing your individual injury history, I can't tell you with full confidence that these classes will work for you. HOWEVER, what I can tell you is that lots of TOTAL PACKAGE members have "stuff" and have specifically told me they LOVE the classes, because they are so joint friendly and there are so many options available.
Regarding if you are new to a modality on the site or a total beginner, let me just say that I adore working with beginners, so I think you'll be pleasantly surprised at how much you can do and how quickly you start seeing changes to your fitness. Beyond that, I am also available in the private FB group to help you get unstuck or answer any questions that come up as you get started.
And if that doesn't answer your question, shoot me an email at hello@naablevy.com and we can chat more about if the site is a good fit for you.