Find the quality photographs which are free to use. These websites are mainly providing photographs/images, you find clips on some websites as well.
Read the uses
Yes, before using any photographs and images from the sites below, read the terms of the use. The images are free to use but the site also provides logos. So the logo of the company should not be merged or edited with different other brands.
The rest of the pictures are of course free to download and edit. But do credit the author of the image, as we like to be liked.
As here you can see the site https://pixloger.com is one of them. A few of the others are listed below.