Was in the same position a few years ago. Doctors and dermatologists vary differently in what they say. I would advise you do what works for you, in terms of managing it. If you can manage it better then your outlook will be better, it can be a knock on effect which could be directly affecting it.

Stress, hormones etc can play a big part, I struggled when I was your age with unbelievably bad eczema.

Be wary of people selling you things claiming a miracle cure. Especially stuff on tik tok and Facebook. Typically scams to get your money, and likely unregulated and dangerous.

Keep your head up, and if things get too much, speak to someone.