How do I change my WordPress website’s address or URL?

by

The easiest way is to use search and replace for wordpress databases

Then you should do a 301 redirect the old domain to the new domain to keep visitors and indexed in Google.

RewriteEngine On

RewriteCond %{HTTP_HOST} !^old-domain\.com [NC]

RewriteRule (.*) http://new-domain.com/$1 [R=301,L]

I hope I’ve helped you with my answer.