I'm not shy but when ever I talk to somebody feel like I'm bothering them?

This issue has been goin on for months and I'm sick and tired of putting myself down and thinking I'm worthless. Well tr problem is that I want to be friends witheveryome in high school to make my year more memorable :] I want to practice in the summer but I don't know how too. I just want to be mor social and enjoy high school please help :(( I despise being a teen