1. get rid of the Philips app (not the bulbs).
2. Replace the Philips Hue bridge (hub) with a RasPi or NUC computer.
3. Connect a Zigbee/Z-Wave combo USB radio dongle.
4. Load Home Assistant OS.
This solution not only replaces the Philips locked system, but it can replace (or take over) Amazon, Google, Apple, Ikea and more, simultaneously. About 2551 more.
Home Assistant is not perfect, but it provides just the privacy (and features) these vendors are taking away or never gave me.
I have Zigbee, Z-Wave, and Wifi devices on Home Assistant (RasPi 4 8GB peaks around 4% utilization). I rarely care about who makes the device nowadays. Is it Zigbee or Z-Wave and cheap? Great, I buy it, and it works.
As of this instance, it manages over 100 "devices", from a magnetic door sensor to the Synology NAS drive temperature.
( list of official integrations [because there are many more through community integrations]: https://www.home-assistant.io/integrations/#all )
I have a Nortek HUSBZB-1 model; got at the end of 2021. Never had to do anything to it. About 44USD now.
I chose it through reading community posts and such. One specific recommendation I took to heart was to put it on a USB port extending cable, so it is away from the electronics.