If it is M1 or M2 Asahi Linux is the way to go, but it is still in development and probably not ready for your mom
Piwix
Dont have it in front of me so instructions might be off, but Audacious can load any winamp skin you download, it is available as an option in the customization settings. You might have to drop it into a skins system folder on audacious, but winamp skins are one of the theme options you can pick on audacious. Looks just like winamp but the backend stuff is different (right click menu's, etc.)
I have had success with the Simple Alarm Clock on F-Droid (not to be confused with the simple mobile tools apps). It has necessary basic features like custom alarms, increasing volume, and dismissing the alarm requires holding down "dismiss" so the chances of accidentally dismissing an alarm instead of snoozing it are much lower. The only time it seemingly failed me was after an overnight android update (samsung), where it didn't work until the phone was unlocked.
Decades later and the only truly Runescape-like game was made by the guys who made Runescape. This seems pretty cool, might try it out.
It's like having a second or third monitor but instead of moving your eyes to the other monitor you move the desktop you're currently looking at.
Legit malware shown in this article. Imagine an operating system/browser injecting what are essentially ads into your webpage. Whether or not chrome or edge are any good these are scummy tactics by microsoft
I set up a VPN tunnel to my home network and use pihole to block ads which worked on this app too, so that wasn't a problem but the audacity to remove my paid-for full access was astoundingly awful
On that note, I bought a GIF viewer app's full version via in-app purchase and about a year later, they updated the app to have ads again regardless and my "full version no ads" app got ads again and now i had to buy a subscription per month to be "ad free" needless to say I uninstalled
Biometric login. It is available to an extent through fprint on Linux but support is not there for all hardware and it isn't a very seamless experience to setup at the moment
Audacious with winamp skins, weening off windows' foobar2000 as an old favorite, jellyamp, amberol occasionally
Love the look of this, would love to be able to use this on my current phone
Sounds like your best bet is to self host an email service