Most people are so busy that they have limited opportunities to meet other people.
Some keep hoping and waiting for introductions from family and friends. If you're a student, you can meet others outside of your major and those from other schools, colleges, or universities. If you're a senior citizen, you can meet others that share your lifestyle and interests. If you're a professional, you can meet doctors, lawyers, CEOs, accountants, engineers, nurses, business people, and other people outside of your profession. By spending more time with people that share your interests, you'll increase your chances of finding those that are compatible with your personality, your values, and your career goals as well as your other goals in life.