Even after looking more closely, it seems like the text isn't very visible. You can change the font color, but there is no guarantee that the image in the background will always be the same color, so this time try adding a readability enhancement feature.
Select the text in the slide, and in the [Properties Window] on the right, choose "No background opacity". Among several options, select "Align to bottom". Then, as shown below, you can see that the basic editing search box is attached behind the text.
< Readability Enhancement Applied Screen >