Yasuos ultimate should be changed\fixed

yasuos ultimate is so useless now a days vs all champions that can stun or grab such as etc, or any other champ that does such stuff even building qss is so useless*[zombie-brand-mindblown]* he is so squishy u literally can play him I tried playing him with different build and with different team compositions he is so weak. either his other skills should be buffed or while he is ulting he should be invulnerable so that his ult wont be cancelled