copy files to external HDD

[Thomas Blasejewicz]

Good evening
I am trying to copy some of the folders in my "home directory" to an
external HDD.
Though not with those incomprehensible terminal commands ...

I select the folders I want to back up (copy), choose the destination
and then select "paste".
However, only a very small portion of the folders / files are actually
copied.
And I get 10 million times the question, whether I want to overwrite or
skip exisiting files
IN SPITE OF marking the little checkbox "apply to all".

Can somebody please explain, why copying a few files has to be such an
ordeal?
And is there a way to convince the computer to do as told?
That would be really helpful.

Thank you.
Thomas