I am trying to create a new page on my Facebook business Manager and I am facing this kind of problem can't be able to create a new page.

Solution:

Use a different computer or mobile phone. Clear the cache and cookie.

Login freshly in to your Facebook account.

Then try creating a new page.

(Don't use any pre-existing brand name)

Follow Facebook guidelines here :
https://m.facebook.com/help/519912414718764/?helpref=faq_content