I've asked a similar question on the ehentai forum, but that seems nowhere near as active as this one.

This site only seem to only have groups recruiting for mangas and eroticas, but rarely any straight doujins. I couldn't find a single group that recruited CTL on either sites.

I even tried to go through any C -> E doujins I can find on NH to try find a group, but it's always the case that either

1. There is just straight up no (scanlation) credits page or;
2. It's just a single guy adversiting commission's.

I don't have the skills to do any other aspects of scanlation other than the translation, but I still want to contribute as there is a lot of untranslated or poorly translated high quality doujins in Chinese.

Do such groups even exist? I understand the demand for CTL is a lot less than JTL, but so far I actually couldn't find even a single group.

Any information would be appreciated!

This might not be the most solid advice but if you look at some recently translated smut manhua or something similar, the credits will usually tell you if that group is looking for translators.