Export setting in cloud lightroom

Export presets are only available in Lightroom Classic. Lightroom Desktop is a different program. It is basically a port of the mobile operating system version of Lightroom to desktop operating system. The real version of Lightroom that you see most online instructions on is called Lightroom Classic. The big difference between the two is that Lightroom Desktop stores all your images in the cloud. Lightroom Classic stores all images on your local hard disk. Lightroom Desktop misses many features that people expect from Lightroom but are only available in Classic such as printing, export presets, hierarchical keywords, smart collections, easy sharing to cloud services (yes ironically classic is better at that too) etc. etc. etc. etc. For most people Classic is what you want. Unfortunately Adobe heavily markets Lightroom Desktop (the cloud version) and Classic is hidden on their website. If you really want the feature that it stores all your images in the cloud online than Lightroom desktop is for you. If you need any of the features listed above, you want to use CLassic. Since you have a subscription including Photoshop, you probably have access to Classic too.