Garry Webster @ WP Page Numbers

Garry Webster

Hello
I am using the latest version of wordpress, and i do not know much about coding. I cant see the previous/next posts in theme in dex or search- ive been told to look in pagination. I have tried to replace the previous/next post link in pagination but i cant see the page numbers so i cant have done it correctly?
Can you advise please

Thanks
Garry