How to win AN arbitrition?

I know that you need the help of Valgsland, Rumburg, Wehlen, Morella and Derdia. Doikg the Blockade is an instant lose. But I've also lost multiple times despite being buddy buddy with everyone and not blockading. Does anything else help or maybe damage me?

I Imagine improving my human rights helps, like death penalty, amnesty, free press. Also maybe dealing with Sordland helps?

Does legalizing drugs make it impossible? The news said my neighnors hated that.

The Wehlen Bombing just happened in my game and I already repealled the golcondist law, legalized drugs, launched the crown supreme campaign, build factories, sold enrgy and thats about it. Also signed all Sordland deals.