I am so sorry. I understand your frustration and have some advice. First, yours is a common complaint, and changing doctors may not help. I have a wonderful neurologist who has treated dozens of MG patients, and I love him to death. But MG is the snowflake disease, different for each of us, and Doc does not begin to understand all the implications. During our appointments, I mostly educate him.
What you must understand: On the MG journey, you are the pilot, not the passenger. Nobody is going to fix you. Nobody is going to take care of you. Nobody knows how. Educate yourself. Watch all the You Tube videos. Devour the articles available on this site, Live in the forums like this, communicating with other sufferers, just like you are doing. You need to establish reasonable goals for your treatment, measure your progress against those goals and share with your doctor how you are doing. Being well again is not a reasonable goal. Having enough energy to get through a productive day without fatigue IS a reasonable goal. Unloading the dishwasher without dropping a plate IS a reasonable goal. An acceptable level of energy and strength can be achieved through a good medicine regimen. And your frustration can and should be treated with something like fluoxetine. Once you demonstrate you know what you are talking about, your doctors will allow you more control of your treatment. He's the one with the prescription pad. Make him use it.
All that having been said, you must exercise some patience. Two years is enough time to feel like you are on the right path, but not necessarily enough time to be where you want to be. Getting your immunosuppression right, with an effective level of steroid boost, if needed, is all trial and error. It takes time to get it right, and progress might be interrupted by a flair or two. Hang in there. Know that many others share the same issues and you are never alone. MG will not allow you a normal life, but you can have a happy and fulfilling life.