Yeah, I reverse searched it and it’s an Istock photo. If it’s essential for you, you can purchase rights to it by going to the link: https://www.istockphoto.com/photo/red-carpet-entrance-gm151521715-10246390 , it’s 12USD for this image.
If you are open to another similar image, you can check out the Official Background Sharing Thread as there are tons of images and Google Drives shared there.
There’s also EXT. REDCARPETEVENT - NIGHT in the Art Catalog that has a ‘photo op’ wall and a red-carpet zone as well.
Good luck 