This is the 907th most frequent Spanish word.
tratar
"Tratar" means "to try," "to deal with," or "to treat," depending on context.
Here, 'tratar' is used reflexively ('tratar de') meaning 'to try or attempt' to do something.
Siempre trato de aprender algo nuevo cada día.
I always try to learn something new every day.
In this case, 'tratar' means 'to be about' or 'to deal with' a specific topic when used impersonally (tratar sobre).
Ese documento trata sobre el cambio climático.
That document is about climate change.
Here, 'tratar' means 'to treat' or 'to behave with a specific intention' towards someone or something.