A.S.
I was homeschooled from kindergarden to 12th grade, I am 21 now and have a TON of friends!
My mom had me in sports, gymnastics then swimming through my high school years which provided tons of friend opportunities for me.
Also, when I was 12 and under we went to local homeschool meeting. Maybe search google for local homeschoolers in your area and see if they hold meeting at the park or at their homes etc.
We actually had a catholic homeschooling group that would have meeting once a month to socialize for moms and kids during the day after school and even had a homechool end of the year graduatin get together.
Homeschooling is great, I'm a 21, well adjusted adult and very glad I was homeschooled!
Good luck!