With their current FIFA rankings (from 147th to 81st in 2016, then now at 77th) suggesting moderate success these past few years, I believe football is now a very close second to basketball in Lebanon.
Countries that basketball is their no.1 sport:
China - (Due to Yao Ming and good result in international basketball from 80's to 2000's)
Lebanon - (Thanks to Fadi and upset victory vs France in 2006 WC)
Philippines
Serbia - (Called themselves as basketball country and Belgrade as basketball city)
Lithuania
South Sudan - (Another country might be the basketball will be their no.1 sport after of their national team's performance)
Latvia
Taiwan - (might be baseball but according to some Taiwan websites, it's basketball is their main sport now)
Angola
Countries that basketball is close no.2 popular sport
Spain - After football, basketball is their main sport
Greece - Same as Spain and maybe will be their no.1 sport in next 10 years due to Giannis' popularity all over the world
Jordan
Turkey
Israel
France
Venezuela - (Fighting between Baseball and Basketball for their no.1 king sport)
Puerto Rico - Same as Venezuela
Dominican Rep.
Argentina
Slovenia - (Due to past international success and maybe surpassing football in next few years depending on Luka's popularity)
Nigeria
Mongolia - (Due to 3x3 success)