*Edit: I checked some of the stuff more out in detail. While some concepts on this are valid and backed up by sience, others like RSD are not. Use this as a springboard for learning, not as a valid source in itself. Yes it says so in the corner already. But spelling it out might help.
People are more complicated then a diagram from the internet. Never forget that.
Unpopular opinion, but a great way to treat many neurological conditions is a ketogenic diet. It works great with intermittent fasting/time restricted eating.
Low budget carnivore is very cheap and surprisingly healthy. It's also guaranteed to be ketogenic and it's easy to prepare the food.
The ketones that your body produces have a protective effect in your neurons that can help them recover if they are being damaged by inflammation or a host of other things.
Childhood trauma is highly correlated with a host of digestive and inflammatory conditions. So if you had any trauma growing up, it's even more likely.
If you're unwilling to change your diet, intense resistance training (weight lifting) and sleep hygiene are also huge.
I personally recommend looking into free lifting programs that are simple like stronglifts 5x5. Melatonin for sleep (start very low dosage and adjust up if it doesn't work - stop after a week and see if you still need it). Also Sam Harris's meditation app which is free if you email and ask for access because you're struggling financially. Meditation is great on it's own but it will also help with sleep.
I wouldn't worry too much about the label, just focus on your symptoms. Impulse issues, restlessness, difficulty relaxing, difficulty falling/staying asleep. Emotional regulation issues. Unsafe decisions. Etc.