My country does not offer free Wi-Fi for any reason whatsoever, the only way you get to enjoy using free Wi-Fi would be either having access to working in a company that makes Wi-Fi service available to its employees. Some universities makes Wi-Fi available to its students, there is this particular university here called University of Nigeria Nsukka (UNN), they make Wi-Fi service available to its students and it's all free.
Apart from having access to free Wi-Fi internet services in companies and universities here, what most people make use of is simply mobile data subscriptions. There are offers on daily, weekly and monthly data subscriptions which comes with different prices and data packages. Currently, I'm making use of MTN data subscription.