Configuration of a website with Typo3 v12.4.17 and SEO optimisation -- 2

We run a website with Typo3 v12.4.17. The website is based on the preconfigured distribution: pizpalue_distribution (https://extensions.typo3.org/extension/pizpalue_distribution). The website was created by us in two languages (German and English). Now the SEO optimisation is to be carried out using the TYPO3 CMS SEO extension (https://packagist.org/packages/typo3/cms-seo). For example, the sitemaps.xml must be created and updated. The robots.txt must also be created.

Unfortunately, SEO optimisation is not possible for us because the SEO menu item is missing in the backend menu.

I have noticed the following:

1)
SEO menu is missing in Typo3 Backend

2)
https://www.XXX.com/sitemap.xml covers only 7 URLs, however the Website has several more pages, which should be listed in the sitemap.xml

In the end, all German pages should be listed under: https://www.XXX.com/sitemap.xml

3)
https://www.XXX.com/?1533906435 is not available

4)
https://www.XXX.com/en/?1533906435 is not available

5)
https://www.XXX.com/en/sitemap.xml is not available

In the end, all English pages should be listed under: https://www.XXX.com/en/sitemap.xml

We are looking for a Typo3 expert who can check the extension configuration and also carry out the SEO optimisation. This is a fixed price project. Please only submit binding fixed-price offers.