For mail I use both tuta and proton.
For photos I use immich with encrypted backups on Google drive.
For search I use duckduckgo and brave (mostly duckduckgo)
As my browsers I use vanadium (of course) Firefox librewolf and sometimes brave.
As a replacement for WhatsApp I tried to use signal but most people aren't willing to switch, some did though.
For notes drive and calendar I use nextcloud with encrypted backups in Google drive.
As a password manager I use protonpass (mainly for aliases).
Ageis auth for Authentication.
For contacts I use the GrapheneOS default app.
For all stores I use sandboxes Google play Aurora (only on my tablet running lineageOS) fdroid and accressent.
For VPN I use tailscale and IVPN.
For AI I use duck.ai.
For home automation I use HomeAssistant.
For maps I still use Google maps (I didn't find a good enough replacement) but sometimes I use comaps.
For translation I mostly translate locally.
I use quad9 for dns and cloudflare as a backup using pihole.
I run GrapheneOS on my phone and LinegaeOS on my tablet.
I watch most of my media through self hosted Jellyfin.