[Fechado] SEO issues

Background of the issue:
Hello,

I’ve run into quite a bizarre issue.
When searching for the term “Klauzál ház”, the domain kult22.hu consistently appears in the top position among the organic search results.

However, kult22.hu is actually another Hungarian-language domain assigned to klauzalhaz.hu via WPML (for technical reasons, two Hungarian-language sites are linked together). Its content is somewhat different.

The Klauzál Ház’s own domain is older, its website is in my opinion richer in content, and indexing is certainly not blocked.
Among the two Hungarian versions, klauzalhaz.hu is set as the default.

We suspect that the following code generated by WPML is causing the issue and making kult22.hu appear as the primary result:
<link rel="alternate" hreflang="hu" href="link oculto" />
<link rel="alternate" hreflang="hu-hu" href="link oculto" />
<link rel="alternate" hreflang="x-default" href="link oculto" />

Symptoms:
The domain kult22.hu appears as the primary result in search results instead of klauzalhaz.hu, which is set as the default and is richer in content.

Questions:
We need the right code to have the right order in google, it is extremly important from SEO point of wiev.
Please help to solve the issue.
Thank you.