Add Category or Tags if does not exist when creating a new post

Hello, first of all i am not a developer.
is it possible to add a category and tags to the database when u create a new post or edit the post
im tired going back and forth to add tags and category to the posts
see screenshot what i mean

it would be really helpful if anyone can help me out.

my Gem has a relations with the following

Gem has one Category
Gem has many Tags


Hi, I am looking for a solution for the same problem.