Modx Revo minimal social network functionality + directory, where to "dig"?

Question

MODX

Good afternoon. The question is how, on Modx revo, you can organize the minimum functionality of a social network, namely: user groups (access), user page, messaging, user karma, a blog of a certain category of users. + The directory is defined, about 60 thousand entries. It will probably grow, very very slowly
there is such a thing
Userprofile2
https://github.com/vgrish/userprofile2
demo userprofile2.vgrish.ru
but in the end, certain functions do not work, at least I could not achieve the same result as on demo, + I do not quite understand how registration works, most likely it works in tandem with another module
Or, suggest another CMS option.