Hi Akente Ward Welcome to the Canvas Community!
That is both a hard and an easy question to answer, and also a very subjective question, but I will do my best.
There really is no one silver bullet, and seldom any one thing one person can do to significantly impact retention; but at the individual student level, nobody has a more important role than the teacher - NOBODY!
I doubt if that helped much, but you did ask the $64,000 question of the 21st Century!
Let's see what others have to say. And, since there really is not one correct answer for your question, I am going to turn it into a discussion.
As for Canvas Tools that I specifically make use of, the primary ones are the large numbers of communication tools that permit teachers to interact with students, and students to interact with each other. It was one of the features that most attracted me 7 years ago when we were choosing a new LMS for our state system
These are very powerful tools.
Retrieving data ...