You need to make a deliberate effort to expand and improve on the quality of your social circle.
Some people are in a very close space. The close social circle that they were born into as kids is the circle that they operate in as adults. Most times this circle has very limited or almost no opportunities for individual advancement.
There are people with enough leverage and influence that could scale your life and open great doors for you. But until you get to meet and interact with them, nothing will happen.
Many people use Facebook and social media to expand their circles, some do it offline. Some make no attempt but yet want benefits that come from having a large and active social circle.
If you were not born into a privileged background in Nigeria, you would need help from people to advance at different stages of your life in this country.
If you are highly introverted, you either need to have a very good job, or have a rare and highly paying skill or talent to survive on your own, otherwise you have to go out and create connections.
Religious indoctrination has made a lot of people timid and socially awkward. I have seen many people who cannot relate and interact with people who are not members of their faith, sect, or denomination. If you are a young person trapped in this web, please do everything you can to break free from this mental slavery.
Education is meant to liberate your mind, and not to reinforce stereotypes.
The world is now cosmopolitan, you need to connect or you will be left behind.