What shampoo should I be using?

Lupita • married an anime junkie like me. Love to watch 90`s sitcoms, and draw, paint, cosplay. my fav 50"s sitcom is i love lucy. my fav disney princess is jasmine. looking to make newfriends.
I have dry damaged hair, split ends. And after 2-3 days of bot showering my hair starts to get greasy and oily. I want to also add volume to my hair and bounce. I have straight hair. I'm not very good at choosing shampoo. Any advice? Plz no rude comments.