The 2nd best thing after uninstalling the fb app from the phone was to log out from it in my laptop's browser, make sure my password is a generated one (so I can't enter it manually) and also make sure it won't autocomplete when I go to facebook.com.

Now if I want to access it I have to open the Password Manager, copy the password and then paste it ... which are too many steps for me to take in order to check it out :)

So, in the past 1-2 months I think I spent in total 1-2 hours on facebook.