I don't have any of those problems but I use office suites very rarely and and I'm on linux.
About the autopudate, you should use winget instead of having each app check for updates or having to it yourself for every app.
I do think libreoffice looks old and has room for improvement, just not so enough for me to look for an alternative. I have read that onlyoffice looks better, but I have never tried it.
I no longer own that phone, what problem do you have?
In iOS, apps can only acces a directory specific to them that no other app can read, there are no shared directories that all apps can acces or a way to make symlinks or something would help (at least i'm not aware of them). So I have to move my files from wherever i need them to use them (like a video player app whose directory is not visible to the file sharing app) to the directory of the app I use to share files, and viceversa when I share files from a computer to the phone.
In android, I can give apps permission to read and write files on the general storage.
I'm talking about files in general, I never tried to share voice notes specifically. If you only want to transfer files to the PC and not to the phone, I think the files app supports FTP. If you can access your voice notes from the files app, this is probably the best solution. File transfers lver USB on iphoes are extremely slow anyway.
Transfering files from an iphone is a nightmare, I used to transfer files using rsync in some app that worked as a linux container, but I first had to transfer the files to the app's storage.
Yo he usado manjaro, arch y actualmente uso artix en mis dos computadoras. Manjaro descártala, artix por lo general funciona bien pero eso de que no tenga systemd llega a genrar problemas dependiendo el software que uses. Arch nunca me dio ningun problema que no se solucionara facilmente o mo fuera culpa mía.
An ssh tunnel over port 8080 might work
Nothing, there is no reason to put that much RAM on your system if you don't even know what to do with it. "What is someone who only uses his car to commute supposed to do with a supercar?"