Hello student!

since you have not mention your domicile it is quite difficult to predict that whether you will get seat or not,but their chances with 418 marks you can get any government or private Ayurvedic college seat. for getting a Ayurvedic seat  you need to atleast get marks of 400 and you have a decent score of 418 so,yes you have a chance of getting a seat in Ayurveda not at least in government college but at least in private one so try till the last one.

hope this helps you!

best wishes!