Can anyone help me answer these questions about the sitemap?

Suppose I have a site with more than 100,000 URLs on different sitemaps submitted to Google. If the priority is set to 1 for all URLs and Google is known to crawl for a limited time, will it scan the same URLs over and over again?

If I change the priority to 0.1 – 0.5, will it crawl different URLs every time?

If I set changefreq to monthly, will it crawl the same URL again only after a month? Between the month, will you search the remaining pages?

I want Google to scan all / most of the urls provided within the sitemap at least once instead of crawling the same urls over and over again. Is there a trick?