TYPO3 11 set custom page title h1 html - typo3

Question

I have TYPO3 11.
I created a Page Title Provider
<?php
declare(strict_types=1);
namespace Myvendor\modellobando\Seo;
use TYPO3\CMS\Core\PageTitle\AbstractPageTitleProvider;
use TYPO3\CMS\Core\Utility\GeneralUtility;
class BandoTitleProvider extends AbstractPageTitleProvider
{
private const DEFAULT_PROPERTIES = 'title';
private const DEFAULT_GLUE = '" "';
public function setTitle(string $title): void
{
$this->title = "ecco ".$title;
}
}
I defined it in template.setup
config.pageTitleProviders {
record {
provider = Goproject\modellobando\Seo\BandoTitleProvider
}
}
It works with meta tag title but the data of the page is not changed, I have to set the tag h1 in html in my layout, how can I do that?
updated question:
As I wrote in comment I tried a query to get info about my model but I don't know how avoid SQL injection using query string parameter (GET) like uid=12
page.10 {
dataProcessing {
1001 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
1001 {
table=mytable
pidInList = 16
markers.uid.field = uid
as = datainfobando
where = (uid = ???)
}
}
}

Answer 1

Using a h1 tag means you are in the body of the HTML document. That content does not have an automated content.
But you can insert it in your page template. If you want it set everywhere you can use the page layout template. You only have to provide the information to your FLUID page template, which can be done easily in typoscript.
Avoiding SQL-injection within a select can be done with using markers and securing them.
Eg. reducing them to integer values.
1001 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
1001 {
table=mytable
pidInList = 16
where = {#uid} = ###recordId###
as = datainfobando
markers {
recordId.data = GP:myId
recordId.intval = 1
}
}