It is not a universal behavior that applies to all girls, as individuals have different personalities and ways of expressing their feelings. Some people, regardless of gender, may act more flirtatiously or intentionally find ways to interact with someone they are attracted to. However, it's important not to make broad generalizations about a person's actions based on their gender.
In social situations, accidental bumps can happen to anyone, and apologizing for it is a polite response. Sometimes, people might find opportunities to interact with someone they are interested in, but it's essential not to assume someone's feelings based on isolated incidents.
If you are interested in someone and you notice these kinds of interactions, it's best to look for other signs and signals of interest as well. Pay attention to their body language, eye contact, and overall behavior when you're around them. Engaging in open and honest communication can also help clarify feelings and intentions.
Remember that the best approach is always to treat each person as an individual, with unique thoughts and feelings, and avoid making assumptions based on stereotypes or generalizations. Respectful and open communication is the key to understanding each other's feelings and intentions in any relationship.