Other than levothyroxine, what are other alternatives for hyperthyroidism? It has been 3 years I still have no energy, and insomnia!

Some thots. You could consider that thyroid is still not fully regulated, but would doubt that is cause at this point. Anemia might be a consideration, but you could also, suffer a sleep disorder such as sleep apnea. You do emphasize fatigue and this does need to be evaluated fully, as several causes. Discuss with your doctor and plan the next step.