issues with nextcloudpi on pi3b+

[geoW]

Welcome 01power.
you may start with an older image, usually rpi4 images should work for rpi3.
You may take a look at a conversation I had some days ago and check the links given there.

Data still syncing to SD card after changing datadirectory to USB

Maybe NextcloudPi_RaspberryPi_v1.53.2.zip is a starting point, that is before dist-upgrade to bookworm, so many updates have to be done. This spring we had nice conversations about rpi3 https://help.nextcloud.com/search?q=rpi3%20order%3Alatest.