Unfortunately the GrapheneOS team do not provide apks for the vanadium browser. Have fun compiling it yourself.
I doubt cromite's devs' knowledge in privacy as they still use Adblock Plus (which has some privacy issues) instead of uBlock Origin.
Brave is even shadier with their past URL injection "accident" and overall crypto involvment.
The best is to self host your own SearXNG metasearch engine.
Matrix, SimpleX, XMPP
It's because LW is behind cloudflare iirc.
Grayjay still works and is being actively maintained. They also support other platforms like PeerTube and Odysee, which you can easily enable.
If you can get a invite code, sure. Or you also can try out Disroot.
I personally pay for Posteo (1 euro/mo).
Thanks for bringing this up, Cowbee has been banned.
I host my searxng instance on a hetzner vps so my ip is not leaked anywhere.