How to properly delete a commit in a branch and push a new one?

Question

git

I know there are many instructions scattered on the net, but these methods are different from each other..
I would like to find some unique, professional method, without harm to myself and the team.
Need to know
1) How to remove the latest commit from a branch, make a new one, and push.
2) How to remove NOT the latest commit from a branch, make a new one, and push.
3) How to rename the commit, and the author himself, and push.
In general, we need a Guru Gita who knows all the ins and outs, who knows what and how to do, please share your experience.

Answer 1

In general, the questions are too abstract. I can give the same abstract answer:
1. git reset + git push
2. git rebase + git push
3. git commit + git push