How to specify the path to a photo from the cloud in the slider on the site?

Question

Slider

Hello everybody.
The site contains many photos in one entry, arranged in a vertical ribbon. scrolling is not the most convenient solution.
decided to use a slider to improve the visitor's experience.
The photos are high quality and large.
To speed up processing and issue a photo to the user of the format and size for the visitor's browser, I want to use the Cloudinary cloud service.
ran into a simple problem - how to specify a link to a photo from the cloud in the slider?
website on WordPress. I used the MetaSlider plugin as a slider.
Please let me know if anyone else has come across this issue and if there is another way to solve my problem.