Here you will find some tools that i recommend to use in Firefox to stay Anonymous
https://addons.mozil…fingerprinting/
https://addons.mozil…ent-type-fixer/
https://addons.mozil…kie-autodelete/
https://addons.mozil…/decentraleyes/
https://addons.mozil…tps-everywhere/
https://addons.mozil…languageswitch/
https://addons.mozil…addon/noscript/
https://addons.mozil…ivacy-badger17/
https://addons.mozil…ivacy-settings/
https://addons.mozil…/ublock-origin/
https://addons.mozil…/addon/umatrix/
https://addons.mozil…tring-switcher/
Use your Browser in a VM and also don´t download stuff from here on to your normal OS only into your VM and open it in there.
Another very important thing that you should consider is to use a VPN to Stay Anonymous.
Enjoy!