Sorry, the only contact most Americans have with Nigeria is in the form of obvious attempts at fraud that we find in our emails or reading news articles about Boco Haram. If you meet with some pause from people here, thats probably why.
I’ve been to your country. I was a pilot flying the Haj out of Sokoto and Kano about 20 years ago. With few exceptions (like the police stopping our crew bus and forcing us to surrender the film in our cameras), I actually had a lovely time. I enjoyed the people. Enjoyed the food. My wanderings were limited though. Pilots don’t usually have a lot of time to be tourists.
If you want to meet American bassists on line, your in the right place. Usually topics of discussion tend to be pretty focused on small manageable issues like commenting upon or asking advice about repairs, equipment, matters of playing technique or just tidbits of gossip about notable players or events.
But why not a penpal thread? Probably most of us would be interested about life as a bassist in Nigeria. Is there a thriving classical and jazz musical scene where you live?
The other aspect: if you can manage a visa (difficult and getting more difficult all the time), I would second the recommendation of attending an ISB (International Society of Bassists) convention here for all things bass. Totally fun and informative.