I am a water support, so I need to know a few things to help me improve...

Does anyone know what stat(s) will improve these skills:

cure spell
magic recovery
freeze spell (how to reduce misses, except the skill lvl?)
magic recovery
soul dodge

Also, I notice my cure spell takes quite long to lvl up to lvl 2, I feel like it takes longer than usual (My first account has cure spell, and it seems like the first character lvl up cure spell faster), is that because I have low INT? So, does INT speed up the lvling of skills?

Thanks for everyone's help, I think this site is very good for finding help!!!