first of all: THANKS FOR THE HELP GUYS.
"uBlock Origin blocks certain web browser APIs, and allows you to block domains based on blacklists and your own custom list.
Since people can choose which lists they want and can define their own list, they create a web browser behavior that differs from the original behavior. This can even result in unique behavior of your web browser, making it easier to identify certain users.
So, this isn’t a question of open source vs. closed source, but a question of customization. Customization, which can be detected by websites, is the thing you don’t want in your Tor Browser."
so its just not about not adding your new addons is it?
its sounds also like its a bad idea to costumize the settings and the already installed addons that comes with TOR, am i correct?