Please help with advice!

I am 13 and I’m pretty sure I’m bi but I’m really confused. I’ve only been with guys and the ones I’ve been with are complete idiots so I felt myself starting to gravitate towards girls but I didn’t realise until last month. I’ve told 3 people because I trust them with my life and they always keep my secrets. I know most of my family will be supportive but I’m scared because I’m just random, weird and majorly socially awkward and need help. To top it all off, my friend is homophobic and I can’t tell her because she’ll hate me and all we do is joke around in lessons. Please help and tell me if you have been in a similar position and what you did. Please give me advice on what to do and how I can help handle my anxiety