I want to know how to predict Matic to this date. I knew that its going to pump high today but I exit too soon.
You said that you knew it that it shall pump yet you ask how to predict.
Prediction is easy but giving an analysis differd from doing so. And if that is what you want to know, it is basically that you need to study and learn how to analyze not only matic but every coin that you want to know.
Start learning how to read chart with technical analysis.