Sometimes it can take a while to build up connections. Hinge puts a lot of its focus on quality of conversations over quantity of matches. We're more focused on generating real connections, and while the network of other relationship-seekers that fit your specific preferences is substantially more likely to result in such a match – that network is smaller than "everyone within a couple miles of you" (so you won't see quite the volume of connections right off the bat that you might with other apps.)
Try updating your photos, including captions and making sure your prompts are fun and encouraging for members to engage with!
This can go a long way and will let potential matches learn more about you.