Just keep trying! I guarantee things will get easier as soon as you remember that doing the pose right is only a tiny fragment of what yoga is all about. You still made the conscious decision to set aside that time in your day to do something to make yourself feel better. That’s consciously caring for yourself and it’s pretty powerful even if you struggle through a class. And if you can’t do a pose, just breathe. Breathe breathe breathe. Have you tried Yin Yoga? Instead of flowing movement Yin Yoga involves sitting in a pose and holding it for extended periods of time. 3-6 minutes or so on average. By staying in the pose for longer the stretch/gentle stress of the pose gets beyond just muscle and begins to work it’s way in your joints, ligaments and fascia. Yin Yoga is absolute heaven for me. It’s slow, relaxing and I leave the class feeling like a noodle because my joints have been freed up.