fact or true.
The structures of these sentences are:
1-if … present simple + future simple
2- if… present simple + present simple
The structure №1 is used, when we speak about actions but we are not sure about the consequence, we call it possible:
If it rains, we will take an umbrella (we do not know weather be the rain or not).
The structure №2 -when we speak about facts: If you do not practice your English, you are bad at it (it is a fact, result)