Tips to have a friend
It takes time to have a friend, but I am sure this can help you
First of all, talk to her/him, ask them to play with you.
Second of all, invite them to come to your house. I am sure they will say yes
Third of all, communicate well with them and get to know them. They will get used to you
Fourth of all, ask them if you can sit with them at lunch.
Make sure you do this every day.
Eventually, they will be your friend.
I hope this helped you.