Change/remove default /home/user/ directory configuration

Hello !

how to change/remove default /home/user/ directory configuration the command line way ?

what file do i need to change in order to NOT have the default Downloads,Pictures,Videos,Music directory structure or naming by default each time i boot in PureOS ?

i have tried changing the /home/users/.config/user-dirs.dirs but nothing seems to happen

any help is appreciated,
cheers