indeed it is difficult for Tier-2 cities to get achieve good ridership.
but may be promising for future.
.
as per
/news/post/520307 , Namma Metro has daily ridership of ~6.2 lakhs which is expected to rise by 75,000 once Byappanahalli-KR Pura(2.1 km) missing link is completed making it close 7 lakhs daily ridership. Section is expected to open by Aug end