Lightroom on mobile

Yes indeed, there's quite a list of differences (though it's probably less dramatic than it appears). I'm just a hobbyist like yourself, though in my case I started using Lightroom (the original classic version) when it was first released 15 years ago. However, I've since adopted the Lightroom (cloud ecosystem) as well, and incorporate both in my workflow. Not something I'd recommend for anyone starting out!! If I was starting out today, but knowing what I know about Classic's capabilities, I've be very hard pushed to decide between the two....there's little on that list of things that Classic has and Lightroom doesn't that I'd find a show-stopper, so it would be a tough call.

The key for you is to figure out which plan best suits your needs, and Victoria has laid out the pros and cons as well as anyone could, so there's no point in me trying to repeat any of that. When you've decided, and if you need to switch to the Lightroom Plan, contact Adobe Customer Care to get that arranged.