Is is possible the get older versions of adobe apps like indesign?

Hi! I have a Macbook that's a bit out of date (High Sierra 10.13) and all the current Adobe apps are incompatible with it. Is there any way to get an older version of Indesign? I managed to do that a year or so ago and have been using Indesign 2020 but don't find the option now. I absolutely can't update my computer to the next OP system. I read somewhere that older versions of adobe apps are not available during the trial but are if you get the paid plan, is that true? Then again loads of people say you only get to use the two latest versions and I don't think 2021 worked either, at least it didn't when it was 2021.