Have another form and want to post for category in website

I have two form, In first form I have content, info, title, pic and columns category AND in another form I have name, category column.

First form of data is showing in website under menu and sub-menu.

Now I want to show the data of another form in sub-menu with id=13, and here is table image

post table https://ibb.co/s3bLMdg another table https://ibb.co/gPZ73Zz.

my view is for 2nd form like where i am storing the value of my id 13

        <div class="form-group table-dark text-white">
                                                               <input type="hidden" id="category" name="category_id" value="13">
                                                        </div>

but, still it' not showing on website

via Chebli Mohamed