I tried to do a couple of articles myself in other languages through a translator, but it turned out very badly, there was a lot of criticism. So I would like to find a professional translator, who can you recommend?

You can't do it through a translator because it makes the text extremely dry and boring, and readers don't like it. If you want a really good translation, I can recommend the localization service https://www.pangea.global/localization-company/ I have already contacted them many times to translate articles and I can say that they are professionals in their field!