I had previously submitted my websites sitemap to google search console. It submitted all my pages and indexed most of them. However, recently I have changed most of my pages URLs due to SEO. Since I changed most of the URLs, I thought it might have helped to go back into Google search console and resubmit my sitemap and I did. Is there anything I can / should do so that Google knows I only changed the URL of my pages?
I typed into Google "site:mywebsite.com" and most of my pages are indexed and I see them but they have the old URL from when I submitted my sitemap and once you click on one of the pages, of course, the page can not be found because I changed the URL. Also, I'm not using the old URL anymore, I kept the same page but just changed the URL.