XML sitemap is a sitemap which is search engine friendly it help crawler to read our pages more intelligently whereas HTML is a sitemap which is user friendly means easily understandable by user but is not search engine friendly
these are some ways to increase traffic on your website:-
1.ON PAGE SEO
2.OFF PAGE SEO
3.SOCIAL MEDIA MARKEETING
4.SOCIAL MEDIA OPTIMIZATION
5.PAY PER CLICK
6. INTERNET MARKETING