Hose not on all the way?

Sooo was messing around it my engine and noticed this hose (sorry for my ignorance but not sure exactly what hose it is, seems to carry coolant) and it looks to be backed off from where it should be. I tried pushing it on further to no avail, but did move the clip a bit further up which resulted in leaking coolant when driving (bad move). Couldn’t find pics of this. Hoping someone can tell me!

 

It is the lines to your heater core two lines intake and return, move the clamp back into the impression that was made in the hose. if you look you can see a bump in the line just after clamp this is usually a flared end.