with friends

When usually is unusual

In my spare time I usually go out with my friends.

This is grammatically correct. However, if you're talking about something you do regularly or habitually then present simple tense is all you need:

In my spare time I go out with my friends.
Indonesians will feel a need to translate biasanya, but present simple tense already carries the meaning of usually, and so usually is redundant in a sentence like this.

Only use usually when you want to make a contrast between something you do habitually, and something unusual that you have to do because of exceptional or unusual circumstances.

In my spare time I usually go out with my friends, but today I have my IELTS interview.

(You don't usually have an IELTS interview..)