Migrating from Owncloud on OpenSUSE

I have owncloud (10.x) installed but upgraded my OpenSUSE install to 15.2 which has php 7.4. The owncloud repo is not functioning anymore, and the php version does not work with owncloud anymore. So I thought I migrate to nextcloud. Is there way to migrate without the php version for owncloud? I did an rsync before upgrading, so I was wondering if it is just easier to copy the files onto a freshly installed nextcloud? Any thoughts?