You need to differentiate here. If these are internal broken links, setting up redirects would be sensible, or if the page has been removed, they should be completely deleted. If you’ve linked to other external pages, I would simply remove the links. If it’s worthwhile to link to a page, then look for an alternative if it’s closely related to your website content, like a booking page or an external checkout process. Either way, you need to check the broken links. I assume these are voluntarily placed links.