• Brainly User
Click a who's u want to be a friend click profile and side of a right.ther's is one option is there add friend u click that and automatically send ur friend request.

i hope it's useful for u and pls mark as a brainliest
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You can send friend request in brainly by suppose if you want to become someone's friend then go their profile right next to the profile you will find an option add friend then automatically the friend will be sent to the person. If you want to write an message then click on the option write the message and click send. the message will be sent. 
And by the way welcome to Brainly.
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u copy half of mine
I promise that I don't copy. In fact I didn't even see your answer when I saw the I started answering it.
If you think I did then I am sorry. ☺