Use You use the present simple if you want to talk about facts and habits.
You add -s to the verb after he, she, it => He reads a book.
You add -es if the verb ends in -s, -x, -z, -ch or -sh after he, she, it => I never catch the ball.
You add -es to do and go after he, she, it => He does his best.
-y at the end of a verb becomes -ies after he, she or it => He tries to be relaxed.
If there is an a, e, i, o, or u before the -y, you add -s after he, she or it => She buys her shirts online.
Note: Use words like always, never, sometimes, often, every (day) and usually to talk about facts and habits.