Hey Long Lost Caesar. Good to see you here in this sub-forum.

(Before i say anything, my Romani VIDEO AAR Season1 Chapter4 is released. Check it out at EB AAR section )

Okay, you basically have to "do" everything that other nations around you ask you to do.(In terms of diplomacy and military actions)

Yes, it is hard to keep your reputation.
or you can also give them some gold to a little improve your reputation.