Hello, i know the contact app is able to import vcf as contacts but would be nice to have the other way round so i can copy the created vcf file to the computer, as a backup
I know there is bluetooth sharing but still, a “export as vcf file” function would be nicer 
in particular “export all contacs as vcf”
If you don’t mind CLI, take it from the backup:
tar tf sailfish_backup_2024-01-22T13-03-26Z.tar|grep vcf
./People/data/all.vcf
You can do the default Jolla backup and then unpack the backup file. There is the all.vcf.
Or: devel-su -p vcardconverter --export contacts.vcf
There are many other types of sharing that does that too. Saving it on the phone, only so you can have the issue of transferring it out seems a bit unnecessary.
Select all contacts => share => email to yourself
result: one big vcf with all your contacts.
I lost a few contacts this way. I think those that had a photo on them or something but i havent tested in a long time.
Anyway exporting contact -among other things- isn’t as easy as it should have been IMO.
IMHO: involving an unnecessary system (email) in a process is no good design (as long as it is not optional)
it’s not so functional and complete… yes.
Sharing (can be saved with an Android File Manager, too):
Exporting at the command line: