Possibilities are amend or improve.
Reform
The word you are looking for is "rehabilitate." It means to restore to a better condition or improve.
The word root that means change is "morph."
metamorphosis
A word that means a positive change is "transformation." It refers to a significant alteration that leads to improvement or a better state of being. This term can be applied in various contexts, such as personal growth, social movements, or organizational development.
The Latin word for change is "mutatio."
Acceleration means change in speed over time.
The word 'evolve' means change.
Preferred means the same as liked better.
To change lean into a word that means “Narrow road.” The answer is Lane.
good change fells better
You are probably thinking of the word "recuperate".