My blogger posts not indexing, what can I do?

Hello guys, I hosted a blog on blogger since 28 December 2022, but only three blog posts are indexed. How do you guys manage to index blogger contents? This is my first site on blogger, built on expired domain.

Even the 50+ backlinks ain't indexing, except the two I built myself. Please, I need help. Also, what is the best permalink structure for SEO?