You can export your contacts directly to a CSV file via the prospecting tool.
All you need to do is the following steps:
Reveal the relevant contacts by pressing "Show details/Selected״
Mark the revealed contacts you wish to export.
Press on "Export to CSV"
If you wish to save the contacts to a list on the Lusha dashboard and then export the contacts from this list, you can do it as well!
Check the following article to learn how to do it, How can I export my contacts from Lusha Saved Lists?