@annabelle_r95 hey, thanks for a great question!
The Jotform <> Klaviyo integration unfortunately only works via Zapier (or another third party tool), however the good news is that it’s very much possible to achieve what you are trying to do.
Simply create a Zapier workflow where “New Submission” from Jotform triggers an “Update Profile” action in Klaviyo, and Zapier should be able to create custom properties for all information collected, which you can then use to trigger flows or create segments.
I hope this helps, happy to chat further!