First, you can only make money if you decide to monetize your blog. There are however many ways.
It also depends on your niche. Some niches can be easily monetized. Others are really not easy especially if you don’t get the right way to monetize.
Adsense, Sponsored posts, direct ads, affiliate reviews, etc are common ways to monetize but these generally don’t get the same results in all niches.
I know of a blogger who makes over $1000 a month with 1000 daily visits while his friend makes less than $50 a month with more than 5000 daily visit.
Work on your blog, find your hotspot and exploit it