Crawl budget is the number of pages Google will crawl on your site on any given day. This number varies slightly from day to day, but overall it’s relatively stable. … At that point, it becomes time to optimize your crawl budget.

Important Features of Crawl Budget:

Google Crawl Budget will drop if there are low valued URLs on your webpage.
For a good crawl budget, you must constantly update the content on your website. You must remove any duplicate content on the website and retain only high-quality content.
The crawl budget for your website can be negatively impacted by the presence of Duplicate Title tags and Meta tags.
The load speed of your website is a crucial factor for determining your crawl rate.