How do I create a GEDCOM to export to Ancestry, My Heritage, etc.?
Familyseach does not create gedcoms so a 3rd party software needs to be used to create that gedcom needed. Sometimes when you set up an Ancestry account, when first starting it can import 4 generations but it will not move everything automatically.
There are various 3rd party apps that can do this.
I have used Rootsmagic. which can download ancestors of X or descendants of X
I have used it up to like 7 or 8 generations - but thats a ton of people
you sit there waiting for the numbers to go painfully slow (with that many generations)
GEDCOM does not include any media - and only basic vital info.
As has already been proffered by 'Cindy' and 'Dennis' ...
"Family Tree" of "FamilySearch" DOES NOT have "Export" capabilities ...
The best course of action is to try one or a number of the "Third Party" Programmes, both, 'on-line' and 'standalone', that are "Certified" to work with "FamilySearch".
Some of those programmes will allow one to "Synchronise" (eg. transfer/download) the "Deceased" individuals/persons from "Family Tree" of "FamilySearch" to those "Third Party" Programmes; and, that "Synchronisation" generally works both ways.
The various "Third Party" Programmes, both, 'on-line' and 'standalone', that are "Certified" to work with "FamilySearch" can be found in the "Solutions Gallery" of "FamilySearch":
Try them out.
See which one or ones that suit you.
You can use more than one, if you desire.
I hope this helps.