Strange characters appearing on migration to Local

We have a WordPress 5.8.2. I’ve tried migrating it to a local site on my own computer to do some testing of theme updates etc and find that many of the pages have strange characters, usually in place of ", #, etc.

Is there a way to correct these without haveing to edit all pages and posts? Bit of a newbie at this. I copied the site using Duplicator, is there a better way?