If your crush is seemingly more interested in making friends with other people than focusing on you, it could mean a few different things:
They're just friendly: Some people are naturally outgoing and make friends easily. This might not necessarily indicate a lack of interest in you, it could just be their personality to be sociable with many people.
They see you as a friend: It's possible that they consider you to be a friend, and they're behaving with you in a way that they would with any of their other friends. If they're focusing more on making new friends, it might be because they see your relationship as already established.
They're not interested in a romantic relationship: If they're actively seeking friendships rather than focusing on developing a romantic relationship with you, it's possible they're not interested in you in that way. It's important to note that this might not be a reflection on you, but rather their own feelings and preferences.
They're not aware of your feelings: If they don't know about your feelings, they may not realize that you're hoping for more attention from them.
They're trying to make you jealous: While not the healthiest behavior, some people do try to make their crushes jealous by being friendly or flirty with others.
They're unsure about their own feelings: Sometimes, people need time to process their own feelings. They may be friendly with others while they figure out what they feel about you.
In any case, it's important to communicate openly and honestly. If you're comfortable doing so, consider expressing your feelings to your crush. They might not even be aware of your feelings, and sharing them could help clarify the situation. However, be prepared for any outcome and respect their feelings as well.