I don’t think it’s possible, although one idea maybe to do a full restore from a full backup if you have one, Although these days I think the data is restored then you always get a prompt to redownload the apps from the App Store, which would leave you.in a no better place.
Plus unless Lightroom is the only thing you are about, then it sets your iPad back to a previous state and you’d probably lose other data.
Possibly do some more searches on how to install old apps on devices, although I imagine this would involve connecting the iPad to a PC/Mac.
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