Add an raw HTML under Post Title

Hi

How can I add a raw HTML element right below the title. I’ve marked the location where I wanted.

Can you please help me with this?
Regards
Sudhin K Venu

Sorry to come in like this but I’m in an emergency… I messed up with a “raw-html” injection, help me please.
In the news composer (post-pages) I tried to insert a customized audio player but it was obviously incorrect because I blocked everything.
After “save” the composer no longer starts on the news pages (on the normal pages and on the home page everything is normal).
In practice I can no longer modify the structure of the post-pages because the bar where there is “edit with tag div composer” has disappeared. The loading of each news page stops halfway and a sign appears: “AjaxURL has NOT been defined”.
I ask you please: in which file are the raw-html manual code injections that a user inserts with composer written?
I’m sure that if I find that file via ftp I can recognize the anomalous code and delete it manually.
I’m just begging you to help me, because I’m stuck.
Thank you

Good morning Bettina, thank you for your availability.
Unfortunately the code I inserted is not in the text of an article, but in the structure of the article page with the td_composer… so the problem is not within a post, but in all the post pages, because it is in the structure of the page…
I’ll explain better with an image: imagine that what you see is no longer clickable, you can no longer change anything in any page of posts…

• This reply was modified 1 year by MattiaVe.

but is this magic?? Bettina you are unbelievable… thank you so much…
Am I allowed to send you some chocolates? A small gesture of thanks… I would find it right…
Thank you thank you thank you