concern with Gallery and Music

[AC Question]

I used to use HTC on M7, I moved to pixel now. I have concerns with Gallery and music folders which are not available. I am missing many features like hiding folders in Gallery. Playing songs on my mobile directly through Music. Now for both of these I need to go through apps. For pics I need to go to Photos app and no hide folders feature and for music I need to go through 2-3 steps more to get my songs than convention methods I used in my old phone.