I'm getting a lot of crawl errors on search console. A lot of pages from my old sitebuilder site. Should I redirect them to the new web builder pages? If so, how? There are pages from the new site that can't be found? Why is that? Thanks
In the editor, go to manage. You will see a redirect tab. If you have old pages that are not on the new site, then I would set them up to redirect to your desired page. Search engines will discard the deleted pages eventually, but if they still have indexed links, then you should redirect.