Hello Rohit and welcome to ACEScentral !
Here is an image that I found quite useful :
It seems to me that it is the albedo map that is giving you most trouble. Artists generally complain about their renders getting darker, like in this very instructive post. So I am not sure why it is getting washed out. Could you please provide some images/renders ?
Using an ODT (such as Output-sRGB) as an IDT for textures is not a method that we recommend on ACEScentral. I’ll just quote Thomas here :
Hope I can help furthermore when you provide some images.
Al the best,
Chris