This would be better in the Questions section rather than Notes. However ... "Got" is extremely common and versatile but you can't use it for any verb. Also be aware it sounds more informal than the alternatives. 

I drank water. I got water (right?) Right.
I'm waking up. I'm getting up (right?) Right, but 'waking up' and ‘getting up’ are different things. Wake up = stop sleeping. Get up = get out of bed. You can wake up but not get up until hours later.
I'm sitting on a chair. I'm getting on a chair? “To get on a chair” means to climb on the chair, not sit on it. “I had to change a lightbulb, so I got on the chair to reach it.”
I'm angry. I get angry? “I’m angry” means “I’m angry right now.” “I get angry” means it is a character trait, part of my personality. I might not be angry right now, but I get angry easily or often.

I agree that you can't use "get" in substitution of all verbs.  "Get" only substitutes for some verbs.

I'd like to add that "I drank" water is not the same as "I got" water.  "I got" water merely means that I obtained water.  It doesn't necessarily mean that I drank it.  I could have used the water for other purposes.  Example:  A.  "Where did you go?"  B.  "I went to the kitchen."  A.  "What did you do there?"  B.  "I got water."  A.  "Why?"   B.  "I needed water in order to remove a stain from my shirt."