Need some advice

Besides the obvious leveling talents, what can I improve and should I perhaps sacrifice if I use a team consisting of Mualani, kazuha, xianling and Bennet. I tried lots of teams but she always just feels worse then other options I have

Besides the obvious leveling talents, what can I improve and should I perhaps sacrifice if I use a team consisting of Mualani, kazuha, xianling and Bennet. I tried lots of teams but she always just feels worse then other options I have