No personal knowledge of them but a couple would be sabre/dav and radicale:
edit: and for Android phones the DAVx⁵ is a great caldav and carddav client
https://f-droid.org/packages/at.bitfire.davdroid/
#nobridge
No personal knowledge of them but a couple would be sabre/dav and radicale:
edit: and for Android phones the DAVx⁵ is a great caldav and carddav client
https://f-droid.org/packages/at.bitfire.davdroid/
Test with a fedora 42 live usb to verify it isn’t bazzite I’d say