Learning to be OP Support
I am a jungle main but I want to get good enough at support to make adc carries more possible
Right now when I support I want to main

I think soraka=sustain lux=poke thresh=engage
But there are a few things I lack in when I support due to my jungling habbits so here are some questions I have
I try to rush to help a lot of people outside of my lane but is it actually pointless if a kill isnt guaranteed?
I end up losing a lot of exp even if I dont die a lot so is it a known thing to try to almost always be shadowing somebody who is farming?
What does warding deep jungle really mean when im support and when should I do it?
Ive heard that I should never ward lane bushes and only ward in the jungle while im support because the adc is supposed to ward lane bushes so is that really true?
Is completing a support item a rare thing to do or should I normally be trying to build the full thing rather than just halfway?
Any advice about the champs I use or answers to the questions I have would be greatly appreciated!