artix
gentoo
debian

privacy

kicksecure
qubes
whonix
tails

android

calyxos
grapheneos
lineageos
postmarketos
ubuntu touch --> native linux distro for smartphones

other

openbsd
freebsd
haiku
amigaos

KVM + QEMU

internet usage

public: windows (or anything else)
private: kicksecure
(any other linux distro is fine)
anonymous: whonix
sensitive: whonix

basic

florisboard --> simple and customizable keyboard
fossify gallery
fossify voice recorder
fossify music player
lavender photos
OSS weather
libre camera

Vault Explorer --> opens and browses encrypted containers
ffshare --> compressimage, video, audio through ffmpeg before sharing them
areada --> minimal offline android reader
termux --> android terminal emulator and Linux environment app
orbot --> free proxy app for mobile devices

app repositories:
fdroid
droid-ify
aurora store

suckless
xfce
kde
lawnchair(android)