So sorry I know how much it sucks. Here if you need to talk 💪🧡

That honestly could be caused by all kinds of issues. Temperature, bed quality, light mitigation, noise mitigation, are all factors when you are talking sleep quality. Dizzy could be from lack of restful sleep, it could be a tumor, it could be high or low blood pressure. It could also be too much, or too little salt, or potassium. Tired a lot could be from all of the above. It also could be Multiple Sclerosis. What a frustrating conundrum! Answers are wicked hard to come by. I wish you all the best!