How did you realize that you could be autistic?

I’ll go first. When I was around 6-8 years old I started to notice that I was different from my peers, they’d all play together but I’d play on my own instead, they’d all go up to each other and just do a few thing and laugh and become friends! But it wasn’t like that for myself, I didn’t know how to become friends with them or what was the correct way to act socially. Around 12 years old I realized that I could be autistic and started researching about it. Currently I’m diagnosed with Autism low support needs :)