(salam)
Unfortunately, Sunni side is not much open for Shia muslims. So called hardliner Sunnis call Shias Kafir/Majoosi/Sabai/Jews etc. Even in mainstream Sunnis we do not see much struggle from Sunni side for unity among Ummah (Shia-Sunni Unity). Often we being Shias face an unreasonable demand from Sunni side for unity among Ummah (Shia-Sunni Unity) that "Shias should convert to Sunni for unity". This is like a Wahabi saying to a Brailvi convert to Wahabism if you want unity. One has to accept others with their faith/views for unity. One can not thrust upon his/her views to others. On the other hand major Shia scholars always tried and preached for Shia-Sunni unity. Because this is the only way to defeat imperialists/zionists in the world. There are many Shias who are working against Shia-Sunni unity but fortunately, they did not get good recognition from Shia community.