Use multiple browsers… Chromium for google services if you must, Tor for everything anonymous that does not require captcha, IceCat for any additional resource intensive tasks like video calls, and for the rest use free browser like Epiphany, Midori or Falkon.

But as you asked for Windows there is not many open source browsers so you have to blindly trust anyone like Edge, Opera, Chrome, Vivaldi, other chromium forks… If you choose to use these proprietary browsers you might want to use something overseas (in example if you are American use Yandex browser) instead local ones so the data they gather is less likely used against you, however it might be sold as less anonymized depending on origin, who knows. Also if you use a proprietary browser I would not do anything deeply personal or political or even visit forums like Lemmy.

FSF is software movement and those are his personal views he has not expressed them with in FSF. Also there is no pure evil with those thoughts, please let him discuss whatever he wants in his personal website…

Can you make video or picture about the BIOS or is it just coreboot/seabios ?

What do you mean in practice ?

If you already use thunderbird, that would be a good option ?

This is why I use multiple web browsers for different sites and workflow :)