Waterfox is based on esr, so quite outdated. Just use librewolf and some css. You have firefox-one that will make it look pretty and similar to zen. Zen is no good if you care about privacy.

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well yeah I guess some decide to make revenue with this “shady” practices like brave does and others just take 400 millions from google.

I will take a look, it looks interesting. Thank you very much

Its is pretty easy to get rid of all the brave crap. You just need a policy file:

# cat /etc/brave/policies/managed/brave_policies.json
{
    "BraveRewardsDisabled": true,
    "BraveWalletDisabled": true,
    "BraveVPNDisabled": 1,
    "BraveAIChatEnabled": true,
    "NewTabPageLocation": "https://search.brave.com/",
    "TorDisabled": false,
    "PasswordManagerEnabled": false,
    "DnsOverHttpsMode": "automatic"
}

I would suggest Debian. Rock solid and it usually has all you need. If you need newer software on it you can allways use backports and there is also a really cool project called distroboc that will let you run pretty much any application in a container.

I gave up on firefox 1 year ago and went to the dark side with Brave. I am really happy with it even tho part of it is closed source.

You should split groceries/electricity and all that 50/50. The house is yours so she should not pay for it unless you actually both agree she should pay a monthly rent to live in your house. That to me would be correct. I am in a different situation as you as I bought the house with my wife and even tho I spent more because I had more money available I did not ask her extra money. Also keep in mind that wife is different than girlfriend. So since wife>girlfriend I honestly thing you should get to an agreement with your girlfirend and she should actually pay something for the rent and it should not be all on you.