How to rename commits in git?

Question

git

Hello, friends! Here's a question: there are, let's say, 15 commits on Github, but their names are bad (I called them in a hurry))) is it possible to somehow see all the commits and rename them? and yet, if we don’t commit for a week, then 5 commits in 2 days, can we somehow make a beautiful history (can change the commit dates) or something like that?
there is a lot of information on the Internet, but I am afraid to change something without the advice of professionals))
Thanks in advance to those who will respond)