I cannot access my Deezer account without them tracking me, it seems. I tried to open it with my Relay account and the password I used was that of my personal Gmail account. It didn't work and I tried 3 or 4 times in a row. The FAQs don't say anything at all about the password I need to use (or create) to avoid the trackers. How does that work?

I didn't know until recently that Facebook (and who knows what other social media as well) tracks any activity I make online in sites where their icon is attached. I'm no technician or anything remotely close to that, but I do appreciate all the advantages of using Firefox and some of the ad-ons. I use Ublock and Dark Reader, apart from some of the ad-ons produced by Firefox developers such as Facebook Container.
However, I can't see the use of Firefox relay if I cannot access sites with it. Could you please help me understand this a bit more? I'm sure others could profit from the explanation too.

I know SNS and the such track us all the time and that Firefox protects us more than Chrome for sure, but most of us don't really understand how trackers work so as to avoid those sites, e.g.

In any case, thank you for reading this and for taking the time to respond!

Blessings from Argentina.