After server migration only the homepage works (different domain name)

Hi everyone!
I’m am completely new to WordPress and I’m now having problem with server migration.

I have followed step by step guide:-
(https://www.wpexplorer.com/migrating-wordpress-website/)

Step 1: Back Up Your Website’s Files
Step 2: Export The WordPress Database
Step 3: Create The WordPress Database On Your New Host Server
Step 4: Edit the wp-config.php File
Step 5: Import Your Database
Step 6: Upload The WordPress Files To Your New Host
Step 7: Linking to New URL & Defining New Domain
Step 8: The Final Touches

After all the steps, only homepage work correctly. All the pages and posts in the administrative control panel are there but when i click on the “view”, it links to correct link but error “The page you requested is NOT AVAILABLE – A general error has occurred”. The same thing when I attempt to navigate to any of them.

old url : https://kenray.com.my/customer/GraceResidence/
new url : https://graceresidence.com.my/

I not sure where to begin troubleshooting – any pointers would be much appreciated.
Many thanks!