How do I index my pages. If they are not getting index?

Is this a Wordpress site and if it is, did you set the "Discourage Search Engines" option ?

Did you use robots.txt and prevent the pages in question from being indexed ?

I could keep asking questions but it would be easier to just scan your website and see what is going on...

What is the domain name ?

hola 

try google indexing api via google cloud i will put some links here for you

there is to way after setting google key: first to use python script if your website is non Wordpress this is the only option but its easy trust me

the second option is set your key on google fast  indexing plugin provided by rankmath

don't worry this doesn't effect badly on your website

https://github.com/swalker-888/google-indexing-api-bulk

https://www.servergeek.ir/