This whole setup came out of the backing so I’d like to replace the whole thing but I don’t have pipes, the supply line is hoses so I’m not sure what kind of valve I need to look at.
I'm no plumber but even I recognized thats Pex, not a "hose" and have read enough out of curiosity to know I wouldn't mess with it.
There are subtle variants in Pex and the Crimp tools are crazy expensive.