Your issue is most likely related to ST migrating devices from the legacy groovy Device Handlers to Edge Drivers. In most cases, switching to community developed drivers will resolve most of your offline issues.
let’s start with the lock and ge switches… definitely change them to @philh30 drivers. if any are offline, do a general exclusion on them, add the Edge drivers and add the devices back. If any are S2, scan the QR code.
for locks and ge switches → Channel Invitation
for cree bulbs, try @Mariano_Colmenarejo edge drivers: SmartThings. Add a little smartness to your things.
You do not need to remove the old stock drivers at this point.
also, another tool for you to use: Advanced Web App