thanks for reaching out to the wefugees community.
As far as I know, you are a Ghanaian citizen, because citizenship in Ghana is acqiured through birth in this country. As we are not experts for international citizenship law, you could also ask the embassy of Ghana, if this is acceptable for you.
Your nationality might be different from your citizenship in some countries, so please let me know if we're talking about citizenship or something else, if you're unsure.
I hope my answers were useful for you and I'll be very pleased if you contact me again with further questions. I'm a member of the MBEON-staff and I‘ll be glad to guide over a longer period of time. Mbeon is an online consultancy for migrants via the mbeon-app, which you can install on your smartphone for free. Download it via App Store or Google Play Store. You'll find me In the mbeon-app under my name „München, Frau Müller“ and get confidential one-to-one advice in a safe virtual room where nobody can wiretap messages. Further information: www.mbeon.de.