How to create search engine?

Question

What is used, requirements, budget.... Hoping for the best replies.

Answer 1

with lots and lots of web crawlers crawling and saving urls all over is a good start

Answer 2

Hi! your search service in the browser crashed and you cannot use at least Google search, to find answer on your question?

https://m.youtube.com/watch?v=AFigoBtWNQ0

https://www.wikihow.com/Build-Your-Own-Search-Engine

https://support.google.com/programmable-search/answer/4513882?hl=en