Lots of people asking about airtags and locating drones. Sure it will work if walk within range of your tag.
Why not use the tools you already have? You only need an opentx radio and a cheap flywoo gps and that's it.
You can log your gps to your radio. It's super easy and you don't have to pace around looking for your quad. This is how you do it. If you don't have a sd card slot on your phone just buy a reader to plug into your phone.
https://youtu.be/OvXsm44ezkI this is not my video but I'll make an updated one. Hope this helps. Download Google sheets too. It brings you straight to the quad.
Why waste money and trust bluetooth?
I‘m a big fan of the vifly finder mini.