This is the 4593rd most frequent Russian word.
группах
"Groups" (prepositional case, plural).
In this sentence, 'группах' is the plural prepositional form of 'группа' and indicates participation within groups.
Я участвую в различных группах изучения языков.
I participate in various language learning groups.
Here, 'группах' describes locations where discussions are conducted.
В университетских группах часто проводятся обсуждения.
Discussions often take place in university groups.
In this usage, 'группах' emphasizes the context of finding people within smaller social assemblies.