Please follow the below steps to create, add, delete and replace the images in shopware 5 media.
Step 1: Login to the admin panel and go to Content > Media Manager.
Step 2: Click on the Add album to create the new album.
Step 3: Fill the Album name and click on the Add album.
Step 4: After creating the album, click on the Add file to add the images.
Note : You can just DRAG & DROP your images.
Step 5: Select the image which you want to delete and click on the Delete marked file(s) to delete the image.
Step 6: Click on the Yes button if you want to delete the selected image.
Step 7: Select the image if you want to replace then click on the Replace media.
Step 8: Now select the image which you want to replace then click on the Select File or DRAG & DROP the image.
Step 9: Click on the Save button to save the process.