Pakistan tries, and is trying a lot. Pakistani diplomats are running around quite a bit to every capital, every international organization, and everywhere it matters.
Pakistan is trying to upgrade it's diplomacy and trying to follow India's diplomatic moves and strategies.
But at the end of the day, truth cannot be hidden with lies, no matter how honey coated they are. Every country, every organization in the world knows who is the fountainhead of terrorism in South Asia, be it state sponsored terrorism or otherwise. No amount of diplomacy from pakistan will hide that fact.
you got that right, look who got more support on Uri incident.