My wife and I will be traveling to Europe later this month, and we were wondering if anyone had a recommendation for reliable Android compatible Bluetooth trackers for our luggage. If I'm understanding correctly, some of these trackers function within their own technological environment, and others function within the Google Find My network, but I'm not sure of the advantages or disadvantages of either, especially in Europe. I need recommendations from TexAgs!

This is one area that apple shines. Airtag is the winner to the point i have an iPhone 11 to track devices. I have a pebblebee which supports both android find and apple, works but not as well as airtag. Son has chipolo and tile not as good as airtag. Best is Samsung but only if you have Samsung devices and lots of Samsung devices in the environment.
The density of apple devices deployed make airtags work.

Samsung Galaxy SmartTag works great. If you don't have a Samsung device, you can still run it using uTag. I had a galaxy s21 and now run a pixel 9, still works great.
https://github.com/KieronQuinn/uTag

They ping off pretty much any Samsung phone so its always updating. We use them for all our travel. Replaceable batteries too and they last months of run time on non battery saver mode (we turn this on when we get back home each time)

4 pack for $56 should cover 2 bags each for luggage.
https://a.co/d/1nyWJbg

Thanks! Yes, we both have Samsung phones. Sounds like what we need.

The Samsung tags work pretty well - good for Europe as Samsung is more popular there than the US.