Some effort was put in the Ubuntu-MATE numerous
cycles ago, with effort being made to ensure it would install & be made operational by someone with
low visibility, but particularly operational. I believe from feedback they got it done pretty well.
I'm aware problems appeared with the installer over time, and it dropped in priority as it wasn't seen as critical to most their user base, but in the Ubuntu world they did make a pretty decent effort.
I'll provide
https://guide.ubuntu-mate.org/#applications-accessibility which may have some clues as turning the features on (
they aren't on by default & haven't been for some time though I do recall ISOs being created were they were default).
I'll also provide
https://help.ubuntu.com/community/Accessibility which will concentrate largely on Ubuntu Desktop, but sorry I have little knowledge in that area, and mostly recall some QA of Ubuntu-MATE where I used a laptop that didn't have a working screen (
it showed colors but text was unreadable) given I'm sighted (
then verified the results by using an external screen which of course worked!). I was impressed with the Ubuntu-MATE achievements (
when I looked which was a long time ago now) but performing some brief testing & using it full time is very very different I'm sure. I fear the Ubuntu-MATE isn't as
good as for installs as it was when I tested (
here I'm going by bug reports I read and not any experience) but I could be wrong.
(
Whilst likely obvious; please also note my experiences will differ given I wasn't learning the Ubuntu/Ubuntu-MATE system, could see the keyboard correctly & if I got stuck; I could always turn on the mirrored display that did work... thus my experiences may be of no value... But what I saw did impress me as a sighted person trying to simulate poor site with a laptop with broken screen)