That doesn’t sound like a very trustworthy company.
Write down all your symptoms and then try to narrow down what might be wrong through the internet and then go get tested. There are places called “health fairs” that you can go get blood work at for various tests and then have the results sent to you and your doctor.
When someone just tells you to exercise when you have no energy, I see that as a red flag. When I had no energy it turned out to be a combination of cancer and thyroid problems. Being hypothyroid and anemic zaps your energy something fierce. There are a lot of medical problems that can cause that. I pray you can figure out what’s going on and can get help for it.
I have hypothyroid, primary generalized epilepsy, elevated cholesterol, general anxiety, diagnosed low-T (tried 3 HRTs, none helped), low Vit-D which I take Rx-strength supplement for, and OTC allergy meds for seasonal/cat dander.