https://en.wikipedia.org/wiki/Missionary_Church_of_Kopimism

You won’t get rid of google tracking you on Youtube or Gmail,

For gmail that’s true (one should use something else anyhow). For youtube you can use an alternative frontend like NewPipe to avoid tracking.

If you care about privacy you should use a trustworthy paid email. They even aren’t that expensive. You can get them as low as 1 € / month.

You can basically disable most Google tracking though a good DNS that blocks that traffic.

So only most but not all. Therefore it’s not private if there’s any tracking. Thus a de-googled version is the only option.

Have you checked the source code that they actually respect private dns setting for their tracking? Or otherwise verified that no traffic goes to google tracking servers?

If there’s tracking it’s not private.

There’s a dialog within the program to enter your key though I haven’t checked if it connects to the internet at that point. I use an account so I can easily use it on several computers.

It doesn’t auto update and you don’t need to login. You can enter your key directly.

They also offer their software for free for open source projects.