Its Summer I'm bored, what can I do?

So its been a month since summer break and i stay home majority of the time just on my computer, play video game watch movie. I also resell iPhone and iPod on Craigslist to make money but thats the only thing i do really. My mom doesn't like the way I only stay home. She wants me to go out but i have no friends. I don't play any sport, the only exercise i can do is biking and thats the only exercise i like to do. I want to go outside but its boring outside without friends. What can i do outside thats not boring without a friend?

Go hiking and walking and biking. Garden. Make friends. Shoot. Work out. Learn a musical instrument. Watch birds. Get a dog. Or a cat. Dig a hole.

Go to your favorite place with your best friends

Get a job

There's a lot of things you can do in the summer. One of these can be going to the cinemas for going out with friends you can even go to the seaside and enjoy your timezach delete that now barge arch file and say that ok but you can just are getting netflix subscription and and you can just enjoy watching tv don't have to do summer activities in summer wedding date

Go biking long enough to make your mom think you're outside a lot and then go back indoors. She should be happy you have your own business at your age.

Get an internship or a job or something. The experience will be great for the future.