Update your site's .htaccess file to include custom 301 redirects, update lines 6 and 8 as needed.
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^old-page-name(/.*)?$ https://www.myurl.com/new-page-name/ [L,R=301,NC]
RewriteRule ^another-old-page(/.*)?$ https://www.myurl.com/another-new-page/ [L,R=301,NC]
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress