Personally i am using pop os with Wayland enabled on my surface pro 3

T launcher working fine under linux since it java just find and download it as .jar file But i also recommend higly recommend
https://llaun.ch/en it was original tlauncher laucher, more details https://telegra.ph/The-True-Story-of-TL-05-21 Developer even publishing source code of his laucher. But u need to download from ukrainian,russja,belarusia or other countries cause for most europe couries it gonna show DCMA banner from mojang,in other case it will load all files

U don’t need windows version of cs 1.6.Valve ported all cs to linux,so so find native 1.6 version https://rutracker.org/forum/viewtopic.php?t=5735662

Also recommens u to try project portproton for launching games,most of my games works with 2 clicks https://github.com/Castro-Fidel/PortWINE

If u get used to notepad++ very much u can use reimplementation of it which cross platform https://github.com/dail8859/NotepadNext

About 1 i am using https://github.com/dail8859/NotepadNext Feels very close experience to notepad++

2.I am using ifuse without any need for itunes i simply copy paste files as it would be android phone i am using it in cli ,but u can try to use https://github.com/Helltar/idevicegui

5. I am using celluloid or smplayer which is frontend for mpv,mplayer and other,great tool.

6. U can customize almost any shortcut u want

About distribution i like linux mint cinnamon for me it feels quite polished and also using arch linux with kde,but i don’t think it’s for u,at least for now.But at the same time arch have the biggest repository of any kind of programs comparing with other distros + aur .i am running it on everyday bases and mostly everything just works except if nvidia driver break something from time to time.

I am personally not exicted about using arm on pc/laptop all because situation with them can repwat situation with phones where we have locked down devices without ability to unlock bootloader and hug problems with drivers as sequence. Also there no uefi with ACPI so each distribution should be custom build to exact laptop because of operating system should know about installed hardware in laptop/pc in DTB file,i would prefer stay on x86 long as i can and maybe risc v cpus gonna change this situation.

Fuse driver of ntfs-3g yes it’s slow but if configurate to use ntfs3 it’s same fast as in windows

If u wanna go with c# then use something like gtk# or cross platform gui lib like Avalonia

Btw videos not working well because of absense of hardware decoding codecs, and it is make software decoding.

You don’t need a doorbell camera, get a regular camera instead.

You need an app which will receive events from a doorbell via a server to receive data to interface with the app. Both of those things need to be owned and operated by someone to be approved for use on the app store. That’s why a custom open source of doorbell as you envision it doesn’t exist and never will.