No one gave you correct answer here.I’m a NRI living in USA.What you are looking for is **Commercial surrogacy**. It is allowed in few states here in USA. But it is prohibitively expensive here for someone earning from india. I know plenty of single men who went through surrogacy route rather than getting married.
[https://en.wikipedia.org/wiki/Surrogacy_laws_by_country](https://en.wikipedia.org/wiki/Surrogacy_laws_by_country)
Check this link , It is allowed in russia , kazakhstan and some other countries. It doesn’t cost a 20 to 30k USD. I know couple of indians who went through that.
Good luck