Upload back up after reinstalling WP

I’m furious as i sepnt the whole trying to ensure that if i did a back-up of my site ( local host by Bitnami) , I wold be able to upload the back-up after i deleted Bitnami version ( which is rubbish and then upload it onto the Local by Flywheel version of wordpress.
Surprinsibgly I cannnot find the back up at all eve using the scan help of Updraft , is this possible?
I am desperate as i did a lot of work on my localhost site
Any help ???