Using Nextcloud Syc Client on Android?

Hi, im trying to use the android app for Nextcloud to log in with my (just created) disroot account, but i know dont exactly how to log in or what server to use. Im interested mostly in syncing me phone contacs, but its the first time that i use nextcould (and in general, this kind of cloud services, and im loving it).
I know it is a dumb question, but yea, i need a little help.

There are no dumb questions :wink:

Have you tried to follow the relevant tutorial?