Comment by npteljes

Lots of moles to whack. You can try using a non-chromium browser, decked out with privacy addons like uBo, Decentraleyes, Temporary Containers, Privacy Settings. If you'd like a chromium browser, Iridium Browser could work.

Also if you have an Android phone, you could try to install LineageOS without gapps, or go with /e/.

If you use Drive, Sheets etc, you could try ONLYOFFICE. They use GA, but your decked out Firefox should already block that.

For more alternatives, there are different resources that try to be helpful, like this one: https://degooglisons-internet.org/en/