I´m in Spanish Mexican translation but in the Spanish language you have too many slangs that I can’t really contribute, I tried but some phrases I would say it in one way but my Mexican friends will do other way. I’m from Paraguay and here we speak more in voseo https://en.wikipedia.org/wiki/Voseo than tuteo like in Mexico, Spain, etc.
maybe add some es_PY to crowdin and I’ll contribute there
best regards