Not all sites are compatible with Safari, some only work with Chrome or Firefox or Edge.
If you have Bookmarks in Chrome, you can export them from Chrome's own Bookmark manager to an HTML file that Safari will import. Passwords though stored in Chrome are harder to transfer over to Safari.
It is a good idea though to keep a separate repository of passwords that are only partial info, so if it falls in the wrong hands it won't be usable by anyone but you. Only you know your own cypher. Storing in a web browser is giving a lot of trust that the file won't ever fall in the wrong hands.
Sites that are specific to one web browser for compatibility are generally poorly designed in that they open themselves up to hackers because the limited compatibility automatically reveals any vulnerabilities the website has to people who know what are specific to specific web browsers.