This client contacted me through Fiverr and he was having a problem with the website crashing. He actually made this site on his own and he used a lot of plugins which made his site overloaded and full of malware. He provides me with the site files only to remove bugs and malware from it.
First, we uploaded the files on the localhost and removed unwanted and unused image files and plugins then we traced the infected files and replaced them manually with new ones. Then we exported the site using the All in one migration plugin.
After that, I showed the client the site on a subdomain of my own, and when he was satisfied he asked to migrate the files to his own so hosting using same plugin and I added the fresh site back to the clients domain and hosting.
This client is still in contact through WhatsApp. for long term projects .