Helllo and welcome to the forum,
I myself suffered with very bad anxiety for 5 years and at one point couldn’t leave my house and didn’t for about a month! Was some crazy times but thankfully I managed to ‘cure’ myself as the doctors I’d seen were useless. From what you’ve described tho are typical candida symptoms. anxiety does share some of those and it’s not uncommon to have anxiety and candida but from what you’ve said I think its candida causing you the problems. Cure the candida and everything else will fall into place.
As for advice, start the diet and stick to it 100%. It’s not like other diets where if you cheat a little bit it’s fine, this is the total opposite. Another thing, forget timelines, the website says stick to this for x ammount of weeks and this for another few weeks. Do stage one untill your symptom free, then introduce small amount of antifungals and low count and strain probiotics, slowly increase these over the weeks so you got a high count probiotics and a decent amount of antifungals. Then once you up to high levels on both for and have been symptom free for a good while you can start thinking about introducing some foods from stadge 2 one by one and leaving a few days in between to see if you get any reactions and slowly and surely be able to eat more foods that you’ve tested and have a more varied diet, it’s also recommended that you stay on the high count probiotics.
Next bit to tell you about is ‘die off’. Along the treatment you will have die off where the candida toxins are dumped into your system from where you’ve killed the candida and you will feel like you ARE dying. You will get this when you start the diet, when you start probiotics and antifungals and when you up the dosage of both. I really can’t stress enough how important it to do all the steps and stages slowly to minimise this for various reasons. Please See the post by able called ‘dangers of die off’ as this explains it all in depth and how you can minimise it and also supplements to use to help with it.
Good luck and stay strong