Use a better browser: https://www.mozilla.org/en-US/firefox/

I was back on Firefox for a few months, and it's noticeably slower and drains battery (on M2 Air).

If Safari is OK you could move to Orion: https://kagi.com/orion/

I would love to but I can't use the MacOS default password manager :(

Safari supports 3rd-party password managers like 1password no problem.

I tried it briefly but I think it's semi-abandoned? Maybe I should give it another shot. Only non negociables for me are Stylish and Violentmonkey.

Orion is not abandoned, the last beta, version 0.99.133 was released on April 21, 2025. See https://kagi.com/orion/updates/orion-release-notes.html.

Take a look at Zen browser - it's a fork of firefox ESR, with some dramatic UI changes made to look similar to the Arc browsers.

I've been using it on my Mac M1 and I only notice the memory footprint when I have > 30 - 40 tabs open.

Install it using an enterprise profile and enable the ExtensionManifestV2Availability flag: https://news.ycombinator.com/item?id=43340358

Still works for me to this day, but this option might get axed come June 2025.

You can still install the extension manually. This is a good video on how to do it https://www.youtube.com/watch?v=jQX2lgePAKk

Ublock-lite is there, but better switch to firefox or brave