How to Generate XML Sitemap?

Hi, I am new to website designing and development. Before some days I have designed website based on the WordPress platform and want to submit website URL to search engine. As I am new to, website development, I don’t know how to submit website URL to search engine. Someone has suggested me to submit XML sitemap to search engine, but I don’t know how to generate the XML sitemap. I am sharing my website URL https://www.cutis.in/ for reference, kindly let me know how I can generate XML sitemap also suggest me any online sitemap creation tool.

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