There is a reason there are tons of Debian distros. They all make a difference.

Why would you use Chrome webview plus something else? You can’t replace just pile on. Not a good idea. https://grapheneos.org/usage#web-browsing

It’s only an attack surface minimation , security is better on new generations. I use all since I am in the middle of nowhere. If you don’t need it disable it, otherwise let it be

I used adguard.dns before now I have VPN that have DNS filter. Disabling 2-3g minimize attack surface but just a small thing use 3 g if you need it. You can use both private DNA in settings and a free VPN if you want.

Start with the basics. Use a VPN preferable a good one payed in crypto /XMR or cash. Use Foss apps only check out F-droid.

Also one that blocks malware and ads. If not use adguard.dns or other that filter traffic

Settings , disable 2-3 G if you always have access to 4-5 G .

Don’t change add browsers use vanadium. No gapps obviously.

The more challenging is to just use it as WiFi phone without SIM.

To use GOS ofc