Complement their horse and just be yourself!
If the barn does lessons that have people your age in them that can be a great way to meet people, I have made some lifelong friends through riding lessons
Be friendly to them and it will work 😊 You can asked them if they would ride together wirh you 🙂 But you also can asked them something about their horse/s and their equipment so you start an conversation with them ☺️
I've met a lot of people on an equestrian team at my college. Reach out-ask people if they want to ride with you sometime and be social :)
^^ plus just be nice - help people out if they're doing work, complement people on their rides, and of course just talk about horsey things!
Hi Laura, I guess you just have to be yourself and that's all that matters. 😉