The Trove was a site where you could get a shitload of ttrpg content. But it got dmca'd and now only exists (afaik) as a torrent file.
The path to free adobe software is in GenP, here have a guide (it's got other patching methods).
Otherwise most download websites like 4download have "Portable" versions that you just extract and run. I find the site appnee.com is good for those. (but i do find portable ones are often slower maybe it was just me).
You are correct most often precracked just need to be installed, look for the download page for instructions if there's no readme. Patches are often .exe's that you run and cracks are files you can drag and drop into the installation folder (there are exceptions of course)
Awe yea seems like it :/ that sucks.
And even if your pc can't run it there are always cloud hosted installs
under the sketchfab channel, in the tools section
There's a script i found in a discord channel .
I just tried it with Tempermonkey and it worked well. The last script for downloading works but i haven't tried the texture one.
appnee.com has a 2021 version (v10.89)